Not to knock what you are intending to do for your grandchildren, Caran; but, when I was their age our relatives didn't take us anywhere. First of all these theme things didn't exist, and second, even if they did exist the money wasn't there to go. We kids would just don our Wellingtons, slip our arms into a Mac, and go forth into the fields, streams, and woods, and with fantastic childish inventiveness create for ourselves an adventurous day. Just being nostalgic. Anyway, whatever you do today with the kids, have a good time.