Food trucks are not table service! I walked up to the truck. Are you open? Enter Portland hipster response here___________. Ordered my food and you hand me a fucking ipad with % tip options as if I'm ordering a sit down dinner for two... Look, I'm happy to drop a buck in the jar but don't give me a fucking 15%, 18%, 20% tip option when all I want is a sandwich wrap....that I end up bussing myself if I decide to sit at one of the picnic tables..... Food truck guy. You're not a Server, you're more like a barista with a menu (i.e. Starbucks). I'll tip you like I tip my morning cafe workers.