Customers glance at the wait, tap Join the line, and get a text when it's their turn — so they don't have to stand around. The shop's number stays honest by itself.
Walk-ins: tap +1. People who joined from their phone appear here with a name — hit Serve when they're done — the next person gets a text, and the one you just served gets a “leave us a Google review” text. Auto-advance keeps the public number true even on a mad Saturday.