We have one child (aged 12)and some of our friends have three children, all of similar age. We often eat out together and have also been on holidays with them. But I'm becoming increasingly worked up about what happens when the restaurant bill comes - in the past when the children were tiny we would just split the bill 50:50 but now that the children are eating adult portions (which can end up costing £30-50 a head), I think this arrangement is really unfair to us and am becoming resentful that the other family never suggest paying more. I don't want to come over as cheap and petty though and we do otherwise get on really well and enjoy each other's company. Am I being unreasonable to want the other family to pay their proportion - and how do I do it?