The responsible nature of most individuals disappears at a rather shocking pace when the prospect of enjoying a party bus environment becomes available to them. A big part of the reason what that is the case has to do with the fact that party buses are meant to allow people to be a little irresponsible for a change at any given point in time, and if you let people do their own thing they wouldn’t really want to concern themselves with things like food that has been left uncovered.
Any top notch party bus experience would involve large quantities of food, but if you leave this food uncovered then pretty soon a lot of pests would start to emerge in the Colfax party bus that you have hired for this journey. These pests would be quite creepy and they would make a lot of people really uncomfortable. You can use bug spray and the like to try and get rid of them but eventually this would stop working as well so the only truly viable solution that you can look into here would involve not giving them the chance to come into the party bus in the first place.
Covering up any food that has been left out in the open is a great way to do this. If the pests don’t have any food that they can easily eat, they would have no reason to come onto your party bus at all. Instead they would stay where they are in places where they can hunt for the food that they require, thereby allowing them to stay out of your hair and you can focus on your party bus experience instead.