I got this idea from a friend at her daughter's birthday party - and used it twice at my daughter's parties - and it was a hit all the way around! I don't know if you already have a chafing dish - but if you don't, you can get a "disposable" one at Big Lots or Walmart in the party section for only $10. I have one - and have only replaced the Sterno - and used it/them over and over and over again. (for my daughter's parties @ the park, and catering events for my husband @ race tracks)
Anyway - my friend turned me on to the Walmart brand flaky biscuits in a can - the four pack is about $1.50. I buy hot dogs @ Publix when they are BOGO - you can plan ahead and freeze them if you need to, and then thaw the day before. Before the party - I cut the hot dogs in 1/2 or 1/3, peel the biscuits (each one will separate into 3 or 4 layers), wrap the dogs, bake until the breading is done. I put them in the top level of the chafing dishes, cover with foil and wrap them in beach towels. Take a gallon of water with you, when you get to the park, set up the chafing dishes, light the Sterno, fill the bottoms with water & so forth. They will stay warm and toasty quite nicely. I had small appetizer size plates, a bottle of ketchup, a bottle of mustard, some raw veggies & little individual cups of dip, and a big bowl of mini bags of asst. chips, and then drinks of course. You don't have to worry about keeping the ketchup & mustard cold, the individual size veggie dips are great because they can be set out at room temp also - as once they are opened and consumed they are just thrown away. The chips don't get stale, nobody gets offended by dirty handed grabbers, any left overs can be used in future lunches, snacks etc.. It's super easy, universally loved, & inexpensive. If you have time to watch the sales at Publix, you can get the multi packs of chips, & hot dogs BOGO. An 8 pack of hot dogs makes 24 mini pigs in blankets - so if you get them BOGO and make 4 packages - you can feed an army! I was amazed at how fast they were gobbled up at my daughter's park parties. Good luck and have fun! (also works great with Morningstar farms veggie dogs)