I've never been to Yellowstone.. that's a great idea. Trying to think of something (other than the expense Mickey chain) that would be fun for the girls. I think D5 would have a blast at Yellowstone, but not sure about D3.
Need to investigate.
I'm also thinking a trip to Cali would be nice. San Diego has some cool things.. heck.. just being on the beach would be cool. To young to travel that far though.
I'm sure all the East Coasters will throw stuff at me, but I've never been to Myrtle Beach either.