If your partner pays for half of "extras" how does this work for you? At the moment DH gets asked really regularly for half of the cost of "extra curricular" activities. When does that just become an activity mum has arranged on her time? Basically cost of living is hitting us much harder than it is her and DH is getting a bit of kick back when he's querying if the DSC really need to be doing all the out of school activities. Mum doesn't ever ask until she's already paid it and then causes drama when DH says no/queries it.
So how does your partner work it? Do they just pay say a lump sum for extra curricular stuff a month? It seems silly to say every single decide has to be run past DH or it will be a no but he's considering it.