A parent we know is taking her child, as a birthday present, to a pop concert quite a distance away. She is willing to take one of mine (and another family's child) along as well.
She has only asked that we pay the ticket price - but there is a booking fee per ticket and both OH and I feel we should pay that. What we aren't so sure about is whether to offer a contribution to petrol cost - or maybe just to buy the child a nicer than usual birthday present/ offer to take them somewhere.
Added to the complication - we don't know what the other family will do and they aren't as well off (single parent). My inclination is probably not to offer to pay petrol, mainly because of the other family.
But I'm really not sure what we should do......