What do you suggest for dinner?

I have guest coming over for the weekend. Every time I go over to their home for a weekend, they have a meal planned out and already cooked.

I’ve tried asking them before but they won’t tell me what to make because they don’t want to be a bother.
We always end up going out to dinner because they tell us not to cook anything. The problem is, that one person has high cholesterol and a sugar problem, but loves sweets occasionally. The other person doesn’t like pasta (my specialty) and or rice or any starchy food and likes very few vegetables and only likes red meats.

For once, I would love to plan something that could appeal to both of them and be considerate of their diet needs.
So what would you serve? I know they both love plantains, but that is all. She always cooks something different so I never know exactly what they really like.