Swimming is great fun! We’ve been going sine mollie was 10 weeks and they’re just getting fun!!
The majority are definitely weekdays! We have found a couple on the weekend - swimming & a dance class & gym classes. Also noticed more options for these from 18+ months as they tend to reserve weekend classes for older kids. We are fortunate we have Fridays with her so can do the odd thing then. I think the majority of people who run these classes have kids too so that’s why there probably isn’t much offered on a weekend and they are using community halls/churches which are probably more in use on the weekend.
Have you looked at football or swimming classes? They tend to have weekend classes