So originally I had a Mercedes C class booked at LAS, for $505. A little more than I'd like to spend, but could be worth it.

I'm now worried that it'll just be a base trim, so I booked a 2nd car as just a regular intermediate ($145!).

Is there any issue with keeping both reservations until I walk up to the counter? My ultimate goal is to find out how the Mercedes is equipped (if I even get that specific car). If I don't like it, can I simply take the ICAR reservation?

Surely one of you folks have done this!