Re finance - our banks here are technically 'open', but you have to call to arrange an appointment and will be let in at your allocated time to talk to someone. So day to day general banking is all online, or via the bank deposit boxes, and you can only see someone by appointment. Things like appointments for a new mortgage aren't happening as not 'essential'. So again, there is hardly any staff actually in the bank.
Someone asked if teenagers are going out and about here with friends. No they aren't. Everyone seems to be sticking to the rules, which are outside in local area only for short walks for essential exercise, and only alone or with members of your household. So they can pretty much only go for a walk with siblings or parents.
And yes, not all schools will be open, as others have said, after the first day or so they will establish who is where, and then filter the kids who need essential childcare into a reduced number of schools, they won't all stay open.
If a school has usually 6 year groups, 2 classes per year, thats approx 12 teachers and 12 TAs at least. so 24 staff. They will only need 4-6 staff to start with all year groups together playing, and reduce if only say 10 pupils attend. Out of the 24 staff, those with no dependents will be asked to volunteer first, then those with a partner who can stay home. Only after that will parents who require childcare themselves be needed. So most teachers with own children will not be working in the schools, they will be the first sent home to prep online stuff.