Currently staying at a Residence Inn in a 2BR suite, comp upgraded from a studio. Same-day reservation, I call up and ask if they are able to upgrade to the suite if I book a studio as an Ambassador, they say yes, I say great, I give them my name and say "I'll book it in 1 minute and I'll see you in 5." Have done it at numerous Residence Inns to save $100+/night. Always seems to produce a nice welcome amenity too (as far as RIs go, lol) -- tonight we got 3 bottles of water and 3 snacks from the pantry after choosing points as the official welcome gift.