Formal — to staff
Convenience · Store
すみません、こちらでカップ麺のお湯をいただけますか? — Excuse me, may I have hot water for my instant noodles here? (Convenience · Store, Formal — to staff, JLPT N4)
You
すみません、こちらでカップ麺のお湯をいただけますか?
すみません、こちらでカップめんのおゆをいただけますか?
Excuse me, may I have hot water for my instant noodles here?
Romaji: Sumimasen, kochira de kappu-men no oyu o itadakemasu ka? / Reply Romaji: Hai, sochira no kyūtōki o gojiyū ni otsukai kudasai.
Reply
はい、そちらの給湯器をご自由にお使いください。
はい、そちらのきゅうとうきをごじゆうにおつかいください。
Yes, please feel free to use the hot water dispenser over there.
Gesture & etiquette
Point to the instant noodles/cup you just bought.
While many convenience stores with seating areas offer this service, it's polite to ask first. Be careful not to spill hot water.