We are flying to Dalaman next week with Thomas Cook, 2 adults, 3 children. We each have a 20KG hold baggage allowance. Last time we took 2 large cases and distributed everything between thm - but I seem to remember having some issues at Dalaman on the way back and having to repack everything. But I can remember the details. Is there a limit to how heavy a bag can be, would we be better off with 3 smaller caes?