When someone else is treating you to a meal, whether it’s a date or a friend of the family, I was taught to ask for suggestions on the menu. Inquire as to what the host is planning on ordering, and then choose something on the menu in the same price range. Likewise with drinks, if your host orders water, order water. Unless they specifically say, “I’m ordering water, but feel free to order a Coke if you’d like one,” then it would be fine to order a drink.
All of my raising went out the window one day though when the richest family we knew invited us out to eat after church. This was before Jason and I had any children. They invited us to a fast food restaurant and had us order first. Without thinking much about it, my husband and I each ordered a meal deal including a sandwich, fries, and a drink. They ordered after we did. When the food came, I was shocked to see that for their entire family including 6 kids, they had ordered only sandwiches and fries to share with just water to drink. I was very embarrassed.
I think this family probably meant for us to order the way we did, and they didn’t act in any way like we had done something wrong. But I think I ordered the way I did because of my assumption that they had a lot of money. If anyone else had invited me, I would have made my usual inquiries to find out what would be appropriate to order. This was a great lesson for me! Maybe this family was wealthy in part because they had been frugal and wise with what God had blessed them with!
On the other end of the spectrum if you are inviting someone out to eat I think it is best to choose a place you can afford to let your friend select something from the menu. Don’t be like the date that didn’t let me order anything! Ha ha!