Just got back - had a great time used rewards for 2 Zarkana tickets, 2 Aria buffets, and some other smaller things. I had bought extra rewards not knowing for sure which ones we were going to use. Ended up with 7 extra. I know I can cancel 5 within 30 days - but am I correct in assuming that is based on when you cancel? I cancelled 4 already - trying to decide on which one to cancel next and have a couple that I bought just before our trip so they don't expire for nearly 90 days - and one that is lower points but that I bought several weeks earlier. Was thinking I would cancel the one I bought earlier assuming I could just then wait 30 days and go back in and cancel the other two before they expired. Is that how it works?