Hotel Japanese

Don’t listen to the people above. “I’ll deliver the things for you.” Does that mean delivering the coffee to the guests’ seats? That way you can say:

西までお志ちいたします.

If not, I advise you not to pick up things for the guests.

You should know that there is no custom in Japan of saying, "Have a nice meal." As a waiter, the most you can say is "ごゆっくりどうぞ"

In general coffee shops, just saying: "ありがとうございました." is enough. If it is a small regional shop with many "frequent customers", Add the sentence "またいらっしゃってください" or "和お日しくださいませ"