We are renting the City Mini double stroller from Orlando Stroller Rentals. It will be primarily for my 17 month old DS, with the other seat for the other 2 kids if they get tired. I'm worried about the 17 month old napping. The last time we went to a local park he was about 13 months. He was exhausted, and refused to nap. There was just too much going on around him that he was interested in. I had brought a towel to cover the stroller so that he wouldn't be able to see, but he just pulled it off. Any advice on something I could use to cover him so that he'll go to sleep? It's going to be very difficult to tour if he doesn't nap at all... Thanks!