I am considering booking our hotel and car rental as a combo with Expedia. The price I was quoted online for both was only $115 more than the cost of the resort alone (Sheraton Vistana Villages). I've never used expedia before and I'm a bit nervous, I've only ever booked directly with a resort or a travel agent. Can I still make room requests (floor, building location)? Any advice from those who have booked with expedia would be greatly appreciated. Thanks.