All WI’s are different....that’s the first thing to be said.Both in how friendly/unwelcoming their members are, and how formal/informal the proceedings.You may have to try several groups before finding one you like, or can be lucky with your nearest one.
Some groups meet in the daytime, others only in the evenings.
My own WI doesn’t sing Jerusalem ( groups can vote on this by a show of hands) and no baking is required, it’s just tea and biscuits, again it’s up to the group.Some WI’s make a great deal of the business side and it takes up a lot of time, other groups whizz through it really quickly.Speakers and subjects vary wildly as you would expect, and competitions are optional.There is usually a produce table in rural WI’s where you can buy (cheaply) eggs, honey fruit and veg ( I used to come home with a good haul!)
City and town WI’s often have a younger demographic, rural is mixed or older, in some cases very old.
It’s one of those things that you need to try at least for a few meetings .....it can take time to integrate, but you also need to
Do a bit of that yourself, smile and talk to people.
If you offer to be on the committee they will welcome you with open arms.