I already have a rewards card, zero balance from last trip, expires 12/08. I have around $400 in rewards I will transfer, but don't want to put any towards room until I see how much we use in the parks (thus asking about using it at
end of trip). Don't want to leave any on the card (they will expire). Not worried about rewards for what I charge to Visa Card while we're there, we'll use those next time. Make sense?