Hi, ds had inservice yesterday and a friend (a mum from school) offered to take her, her own dd and 2 others to an amusement park, entry fee was 25 pounds. When ds got back in the afternoon, we chatted about the day and it turns out the mum paid for my dd and the 2 other children with Tesco vouchers, ie, she had redeemed her Tesco points to pay for the 4 dcs and then kept 75 pounds form my dd and the 2 other dc. Surely she could have told us that this place took in Tesco vouchers and I could have used my own points and saved the money? I'm grateful that she took dd but surely she should have been upfront about her intention of using vouchers....AIBU?