Formal — to staff
Izakaya
You
すみません、お酒を飲まないのですが、おつまみだけ注文しても大丈夫ですか？
すみません、おさけをのまないのですが、おつまみだけちゅうもんしてもだいじょうぶですか？
Excuse me, I don't drink alcohol, but is it okay to order only snacks (otsumami)?
Romaji: Sumimasen, osake o nomanai no desu ga, otsumami dake chūmon shite mo daijōbu desu ka? / Reply Romaji: Hai, mochiron desu! Sofuto dorinku mo gozaimasu node, goyukkuri dōzo.
Reply
はい、もちろんです！ソフトドリンクもございますので、ごゆっくりどうぞ。
はい、もちろんです！ソフトドリンクもございますので、ごゆっくりどうぞ。
Yes, of course! We also have soft drinks, so please take your time and enjoy.
Gesture & etiquette
Polite bow or slight head nod, perhaps a clear hand gesture towards yourself or the menu.
Be aware that some izakayas might have a mandatory seating charge (otōshi/tsukidashi) or a 'one drink per person' policy. This phrase addresses the main concern, but additional questions might be needed for specific establishments.