Reading your message, it seems to me that what is bothering you is that you have done all the arranging and are worried that if it doesnt go to plan you might be blamed or would feel responsible for things. So if you can say to yourself firstly, well done for making all the effort to organise it. Then taking the normal sensible precautions of travelling anywhere you are all responsible for yourselves. If they complain or moan about any of your efforts, the simple answer is of course well next time you can sort it!! Give yourself a pat on the back for making the effort, take a deep breath and enjoy it. (if anyone looks a bit scary or you are feeling uptight in any given situation, just in your head imagine them sat on the loo with their trousers round their ankles. Silly but makes you smile, then you relax and carry on. Hope you have a good trip!!