Red Robin has had the tablet thing for a few years now, you pay on the tablet and it lights up green when you're good to go, you can just leave after that. That sounds like your main complaint; personally I've eaten at enough chinese places that getting my bill from a sluggish staff and getting out has never been a big problem... I want the tablet expanded to the rest of the experience at Red Robin (and elsewhere) though -- tap my order, tap for refills, things delivered and taken away via robot... Maybe one day.