Under EU and UK law you have certain rights whenever there is a delay, escalating as the delay gets longer. The rights are in the form of duties placed on the carrier or tour organiser and I suggest you get yourself a copy of these from the nearest airport, Cetizens Advice Bureau or any other source that has them such as travel agents (Thomas Cook should have them), etc. - it is ther duty of airlines and presumably tour organisers to on request make a copy available to the traveller. So, the first thing to note is that you presented yourselves for travel at the appointed time and place and were told of a delay. If you were not advised of your rights and/or offered assistance of the type you were entitled to then the carrier/organiser would normally be deemed at fault. If you chose to go home rather than avail yourselves of offered assistance, then that might be deemed as you turning down the offer. If you went home because the airline/operator left you high and dry with just advice to come back in X days or whatever, then that would normally be deemed the airline's/operator's failure to meet the duty of care placed on them. If you feel they may be at fault then it might be best to write a letter to them describing events and say you are making a claim under the terms of the law, stating the amount you are claiming (do not be unreasonable). If that does not lead to a satisfactory resolution, then you can write again saying you intend to put the matter in the hands of your solicitor with a view to securing the sum demanded plus costs. If that does not bring a satisfactory result then you can consider making a small claim in court, by far the cheapest form of litigation (asking a solicitor to do things for you is not a cost effective way to approach things).