Slightly off-topic, but I discovered a wonderful solution about a decade ago. One of my friends from CA who is from WI was back in WI visiting and we went to a game. I had recently moved back to WI and didn't have a portable grill and didn't really want to fork over $50 or whatever for a small grill that I wasn't going to use very often.
My buddy and I are both huge Rocky Rococco fans, so we ordered takeout from the one on Bluemound and then took Bluemound all the way to the stadium parking lot. Set up a table, dropped a large Rocky's on it, ate pizza, drank beer, and didn't have to light anything, wait for food to cook, or wait for a grill to cool down afterwards before putting it away. The group of youngsters next to us who were struggling with their little grill... you should have seen the look on their faces. They learned some wisdom from their elders that day.