The website address is www.nationalcar.com. I don't think you will get 8 in a minivan either. You could try two smaller cars or a full size van, but how about Tiffany Town Car? You can check them out at Tiffanytowncar.com. They charge $95.00 round trip (if staying onsite, a little less if not) for a van that will hold up to 10 and if you book via the web you get $5.00 off. You also get a 1/2 hour grocery stop on the way to your hotel. Otherwise there is always Mears Shuttle for $27.00/adult, $19.00/child round trip (I think), but to me Tiffany would probably be the way to go. Then if you need a car for just a day trip or something, you can rent one onsite.