■ N、お願[ねが]いします
Meaning: “N, please.” (polite request)
Used to politely request or order something.
More polite than ください.
Implies asking someone to do something for you.
■ N、ください
Meaning: “Please give me N.”
Used to request or order something directly.
Slightly less formal than お願[ねが]いします.
Often used when pointing at or selecting something.
■ Nに します
Meaning: “I'll have N.” / “I'll choose N.” (expresses a decision)
します is the マス-form of する (to do).
にします shows that a decision or choice has been made.
Use 何[なに]に しますか? to ask what someone will choose or order.
■ N、【number】お願[ねが]いします/ください
Meaning: “___ (quantity) of N, please.” (used when ordering)
Noun + 【native Japanese number】 + お願[ねが]いします
Noun + 【native Japanese number】 + ください
Use native Japanese counters like ひとつ、ふたつ、みっつ, etc., for counting general items (e.g., food and drinks).
Place the number after the noun.
Use お願[ねが]いします for polite requests, and ください for more direct ones.
■ N(は)ありますか?
Meaning: “Do you have N?” / “Is there N?”
あります is the マス-form of ある (to exist; to have).
Used to ask whether something exists or is available.
The particle は marks the item as the topic, but it can be omitted in conversation.