Dollar: Express vs. RapidRental, or both?

[richmo]

I have an upcoming Dollar reservation at MCO. Is it most convenient to do RapidRental or link the Dollar Express account, or both? I think I read somewhere that if you use Dollar Express, you can't do RapidRental. I don't care about accumulating points or benefits, just want to get thru MCO with as few lines as possible...