"what would you like / to order?" in a restaurant
In Japanese, there are several ways to say depends on the restaurant or person. Here are some of them.
ごちゅうもんはおきまりでしょうか。or only おきまりでしょうか。
ごちゅうもんはなにになさいますか。or only なにになさいますか。
In the casual restaurant, they might talk a bit more casually:
ごちゅうもんは?
おきまりですか?
There might be other cases, anyway, I hope this helps you.