This will be our second trip. Grandparents were there last time to keep the little one. We're on our own this time. My 9 year old will want to ride the big stuff ( so does mom & dad). Can we use Baby Swap for a 4 year old? Does the big kid get to ride twice? Does the second half of us have to wait in line again or ride immediately? Is it worth the time or should one parent go with the big kid and forget the swap thing? as long as he gets to ride is the important thing, I guess. the other parent can do without, if necessary.