You can buy a larger memory card

I can't believe you'll fill it up in 2 days w/a decent size. When I went to DisneyWorld, I used 2 - 512MBs (and also had as back-up a 256MB and most of the 32MB in DH's camera that he barely used )
You could always find a Walgreens or other place w/a photo development kiosk and burn them to CDs to free up the space. But WOW - using up a card in 1 or 2 days lol.
btw...I now also have a 4GB card

plenty of room for me.
also lol...I actually only had 1 512MB card, but borrowed one from my sister for the trip. Maybe you could borrow someone's for the trip?