Thanks for the feedback! It is short yes, mostly because I didn't want to spend more time on it before showing it to somebody. If the feedback is positive I'll add more. About displaying all activities, it's a good point, I though it was more fun to get one at a time, but I might add the display all as another option. And about the categories, I hear you, but take it with a grain of salt, those depends on many factors. For example I consider board game night free because where I am there are many pubs with games you can play. Same with archery, I've been in places where with 20euros or less you can try it for one hour..so yes, it depends.
I really like the idea and the site looks nice. It's good the list is short as of now, as quality of suggestions is crucial. I'll be absolutely looking at it, sometimes I get really too narrow in focus.
The issue may be that your filters act as ORs whereas someone might interpret them as ANDs. If I filter for Social+Kids and Culinary, the CBD/space cake ones come up.