How an izakaya works (and what that little dish is)

1. 1Get seated, then expect a small dish (お通し / otoshi) to arrive without being ordered. It's a set starter that doubles as a seat charge — a few hundred yen, added to your bill. Normal, not a scam.
2. 2Order however suits you: a few drinks and small plates at a time, shared across the table, or a set course (コース) — many places offer one, often bundled with all-you-can-drink (飲み放題).
3. 3To call staff, press the call button on the table if there is one, or just say sumimasen across the room. Both are completely normal.
4. 4Pay at the register by the door on your way out, not at the table. Take the slip from your table with you if there is one.

Heads up. The お通し isn't optional and isn't free — it's effectively a small cover charge. Sending it back isn't really a thing.

← All of How to use Japan