Hotel Information

Hyatt Regency Orange County
11999 Harbor Blvd.
Garden Grove, California 92840
Phone Number: +1-714-750-1234
Toll Free Reservations (USA and Canada): 1-888-421-1442
Hotel web address:


SIAM does not share or distribute personal, registration or housing details with any company or person. Improper solicitation of hotel reservations is not approved by SIAM, and any claim SIAM has provided attendee contact information for solicitation is fraudulent. Reservations offered by unaffiliated organizations may promise lower rates, however, they may be illegitimate, nonexistent, non-refundable, or have unreasonable cancellation or change penalties. Please be aware of, and report any unauthorized solicitation to [email protected].


Toll Free Reservations (USA and Canada): 1-888-421-1442
Online Reservations Links:

Group Rate Reservations Link ($165):
Student Rate Reservations Link ($130):

Government employees are encouraged to reserve a room in the conference block at the group rate of $165. The negotiated group rate is below the standard GSA rates.
Student ID must be presented upon check-in. SIAM is able to negotiate a limited number of special student rate rooms. Please book early as these rooms sell out quickly!

Hotel Reservation Deadline: Monday, March 19, 2018



Discover magic, adventure, recreation and relaxation in the Hyatt Regency hotel located only minutes from the Disneyland® Resort. Just a short drive away, you’ll find tons of things to do in Anaheim, CA, like playing on beautiful beaches, exploring adventure parks, shopping outlets and professional sports games. Let the experienced Concierge point you in the right direction for all the best attractions and activities near Disneyland®.


Did you know?

Your support in staying at the Hyatt Regency Orange County helps keep the conference costs down, which directly affects your registration fees. SIAM guarantees the hotel that we will fill a certain number of “room nights” (rooms per night) during the conference. SIAM incurs penalties if too many attendees opt to stay in other hotels in the area or neglect to indicate to the hotel that they are with the SIAM conference. At this time, conference costs do not include meeting room rental. If SIAM fails to fill the contracted room block, SIAM is charged the cost for the meeting rooms on a daily basis, along with a hefty penalty. Future registration fees could increase to cover these additional risks.



SIAM is holding a block of rooms at the Hyatt Regency Orange County. These rooms are being held on a first-come, first-served basis at the following discounted rates. Please be aware the room block fills quickly, so we suggest you make your hotel and travel plans early.

The group rate is guaranteed until the cutoff date or until the room block is full. If rooms are available after the cutoff date, they will be offered at the best available rate.  The group rate will not be available after March 19.

Reservation Deadline - Monday, March 19, 2018 (or until the room block is filled)
The group rate will *not* be available after this date, and prevailing hotel room rates will apply

Single/Double Room Rate*     $165 per night plus 14.5% tax, 2.5% GGTID Assessment Fee, and a $0.05 CA Tourism Tax
Student rate                            $130 per night plus 14.5% tax, 2.5% GGTID Assessment Fee, and a $0.05 CA Tourism Tax
Student ID must be presented upon check-in. SIAM is able to negotiate a limited number of special student rate rooms. Please book early as these rooms sell out quickly!

Room rates include complimentary Internet access.
All rooms based on availability.
All rates are subject to state and local occupancy taxes.
*The rate for a triple occupancy is $190 per night and $215 per night for quad occupancy.

In the event that you find a lower room rate, please make the reservation at the lower rate and notify SIAM immediately ([email protected]). By doing this you will receive the lower rate and be counted towards the SIAM room block. However, please be aware by booking outside the SIAM room block at a lower rate, you may not receive the same benefits as rooms reserved in the SIAM room block (i.e complimentary Internet access).

Reservations are not confirmed until acknowledged in writing by the hotel or verified by phone. Be sure to get a confirmation number from the hotel and be prepared to provide that number to the front desk clerk upon check-in at the hotel. Be sure to get a confirmation number.

When making reservations, be sure to identify yourself as an attendee of the SIAM Conference on Uncertainty Quantification (UQ18). In order to receive the SIAM group rate, please make your reservations using the above group reservation link. You may also make your reservation by phone by calling 1-888-421-1442 (USA and Canada) or +1-714-750-1234. Faxed reservations are not accepted for this hotel.

Do not make your reservation online using the hotel’s general web site, as this will not allow you to obtain the SIAM group rate. Be sure to use the group link if making reservations online. Remember to get your confirmation number!



If you need to change or cancel your reservation, you must contact the hotel prior to 12:00 AM on the scheduled arrival date to avoid a cancellation fee. You can contact the hotel at 1-888-421-1442 (USA and Canada) or +1-714-750-1234. Remember to get a cancellation number!


Check-In and Check-Out

Check-in time is 4:00 PM and check-out time is 12:00 PM.



The Hyatt Regency Orange County requires a credit card to confirm and guarantee your reservation. The hotel will send out e-mail confirmations upon request.


Welcome Reception

When making your reservation, remember that the Welcome Reception is scheduled for Monday, April 16. This is an excellent networking opportunity!



Posted rates apply.


Health Facilities

Hotel guests will have complimentary use of the fitness center, tennis court/basketball court, and two heated outdoor pools and hot tub and sundeck in the Hyatt Regency Orange County.


Telephone Messages

The hotel operator can be reached at +1-714-750-1234. Telephone messages can be left in guest rooms for guests staying in the hotel.


Hotel Room Sharing Form

The hotel room sharing form is available here.

To RSVP to the conference on Facebook and connect with other attendees, find roommates etc., please visit

If you are tweeting about the conference, please use the designated hashtag to enable other attendees to keep up with the Twitter conversation and to allow better archiving of our conference discussions.  The hashtag for this meeting is #SIAMUQ18. SIAM’s Twitter handle is @TheSIAMNews.


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