I agree with DavidandDenise sit upsand push ups, sometimes I will walk in the morning, or swim laps in the evening. I know walking sounds weird, with all the walking you do, but is it cardio walking? Not me, when we are in the parks, it is a leisurely walk.
The pedometer is a great idea, some time ago I posted about how many miles do you walk in a typical day at disney? I can't wait to find out!
DH and I noticed how MUCH food you get at the parks, and sometimes for lunch, we get one entree and split it. We laughed one day at the Sizzler, while tourists were taking pictures of the breakfast buffet...we couldn't believe it, then they told us, they have never seen so much food that you could just help yourself!! So they were taking pictures to show family and friends that it really happened! That was when we realized what kind of society we live in. Bigger portions and eat as much as you like...you have to step back and say, "Do I eat this much when I am at home?"
Anyway, I am rambling!!