My experience is , moved to a new area with dh , didn't know anyone.
Found out a new wi was being formed , so went along to first meeting , there was around 60 of us.
Joined up , spoke to a few women , but quite a few came with friends so was mainly alone .
Meetings are held monthly , it basically runs as , business first ( told about news of wi county wise , any coffee mornings / events by local wi's , any trips organised locally , any news about groups within your wi .) Groups are started within the group by a member , could be walking , social club , crafting , theatre , book group etc .
They are set up by a wi member by their interest , hobby and inclination to get it up and running.
After business is a talk by ( usually ) a non wi person , quite often local interest or a charity .
Then a tea break where you mingle with each other / chat.
Then sometimes a craft activity or feedback from your President about how the wi is doing moneywise / designated charity etc , then home .
Ours is around 90 minutes long held on an evening .
I've joined a few groups , but over the several years , now only attend one.
Do I enjoy it ? First will say I think it depends on it's members , I think that's what makes it .
I don't attend every meeting as mine is very cliquey , you either liked by the committee or not , so although I've been in it since day one , I don't feel fully integrated.
I can almost hear people saying join the committee then , but I can't join it because it doesn't fit in with my free evenings .
I remain every year because it's something to do and can be interesting .
In my area it is mostly older women and it would be lovely to have younger ones join .
I'd say join and see how it is , you might be lucky.
I've made a handful of friends I could go for a coffee with but besties , not yet . I've been going 5 years .