Just wondering who is being unreasonable here. Mum and dad booked a multi country trip to Europe for 7 weeks next year in peak season. Now, my SIL (dh's sister) has now gotten engaged (after they booked it.) and prior to looking for a venue, asks my parents when they are going so mum told her their dates... and my SIL goes and books the church & venue 4 days before they get back. Now, on their last leg of their trip -all paid for already, it's a few days in Turkey and about 2 days in Dubai then back to Aus.. She's expecting them to change their flights to be able to come to the wedding. I told her it's not that easy or cheap to change their plans as A: - they can't even come back on the Friday - they will have jet lag, so would have to be home Wed latest (3 days b4 wedding) to try catch up with some zzz's, not to mention, it will completely cut their last leg of Turkey & Dubai out completely. I also told her it probably won't be cheap to change a few flights as well. She's a bit crabby over it, but the way my parents see it as oh well tough luck they miss out, she knew their dates and goes and so what?. They will just give them their gift before they go. It would mean cutting off about 7 days off their trip entirely between connecting flights to get back here early. who's being unreasonable?