I use a lovely childminder for my 2 children for after school and holiday care, and have always been really happy with her service.
My youngest started school in September, and we drew up a new contract to include her. In the past I have used the childminder during some school holidays aswell and have paid her on an ad hoc basis for this i.e. she has not charged me if she not actually looked after my child that week. Since my youngest started I notice she is now charging me half fees during holidays for both of them even when she's not looking after them.
I've checked the contract I signed with her originally when she only looked after one of my children and it states 'this is a term time and holiday contract' whereas the new contract says 'this is a full time contract term time hours as above and holiday times'. I'm not sure what the difference is 
The trouble is that I had not budgeted for holiday charges when she is not looking after my DC and I'm a bit confused as to why her charges seem to have changed since the beginning of this term. Would it be rude/cheeky to ask if we could go back to the previous arrangement of paying her for holidays on an ad hoc basis and having a term-time only contract? I don't want to spoil our relationship but as I said we haven't budgeted for this increase.
Thanks for any help.