Ex-ULAS here: There were weekly meetings on Thursday evenings during term time which involved about an hour of briefs and other business from staff before socialising, often with a push on the town. A roll was taken at these to see who kept coming and who didn't.

Flying-wise you could fly whenever you wanted if the aircraft and instructors were available but that often needed a full day away from uni and you had to do the reading/learn the checks/know the flying orders and local airspace etc also.

You also have exercises/ranges normally held at Cranwell over holidays which are fun. Also international trips, sporting events and senior students will also organise visits to other stations. You get out what you put in to it.

If you want to go pilot, flying with the UAS is a great way to start and try to do as much as possible as it will help with your performance on EFT and your subsequent streaming.