I have made holiday reservations using Costco-Hyatt Three for Two. Stay three nights, pay for two at checkout. I have reserved weekend of July 4th. Go to Costco site. Log In. Use Costco/Hyatt number and speak with Hyatt agent. (((( I tied initially to call Hyatt direct and no one(3) I spoke with knew of this///After calling the Hyatt/Costco number, the Hyatt rep said it was set up this way))).The best thing of this is all three nights count towards the current Hyatt promotion for 10K ending June 30th if you use before deadline. Offer is not good at resort properties and iffy when I tried to book at grand Hyatt for holidays, but very easy at full Hyatt 's.