GMF -

I think it's dependent on return mode and company. In fact at least one res agent encouraged me to do it this way and it worked.

I've used the UA50% paper successfully on National and returned after only 1 day when the deal was for a 2 day keep. This was at ORD. No grief.

I also believe that I used same deal with Budget at DEN.

I'd say do it.

Greg