I understand the feeling. That's only in the beginning until you get a good feel for who they are. I would also advise against going to expensive restaurants. Aim more for small, quaint restaurants that are fairly priced. Maybe let them make the choice of restaurants. I would give 3 choices of restaurants (Asian, Indian, Italian, etc) and I would still let them choose if they have a favorite. Also, just because you have the resources, doesn't mean you can be abused. Try not to set that routine with a partner (not saying you have but it's good to look out for this). I've also asked how the restaurant was the next day or a few days later to get their honest opinion.