Is their room to put in a triple sink?
Yes, plenty of room for triple sink. We actually had two double sinks in there at the time when we were operating it, but health dept. said it wasn't necessary, based on our permit.
Hello, I was wondering when was the last time that the trailer was inspected by the health department, how long since it was used for vending and how old are the fresh and grey water tanks and it's plumbing?
It was inspected at our last event of the 2015 season in September. The entire plumbing system and water tanks were replaced last summer.