Just about any wagon will work in a pinch. My youngest son and I went to Road Atlanta for a weekend in the early to mid 90's in the family boat when he was about 10 or 12. Rain was highly likely, so we didn't even bother with the tent... committed fully to the wagon.
Ours was an earlier model... an '88 or '89, but the same blue. We just folded the back seat forward and threw our food, sleeping bags, and foam pad in and hit the road. When we got there, I backed in facing the track about 100 feet north of the bridge and we were set.
In the rain, we'd flip up that back glass, drop the tailgate, and spectate from there. It turned out to be a great weekend.
He still talks about it. One of his memories is when we'd put mustard on saltines, add halved vienna sausages, and make a miniature sandwich... he remembers how the mustard would squirt out the holes in the saltines.