I think, it's very easy to avoid troubles while travelling. If you're travelling anywhere far from home it's likely you'll be travelling by plane. The flight can be either delayed or cancelled, but most airlines will give you a refund or carry you on another scheduled service as soon as space is available. Anyone may also have troubles with accommodation. The main problems being that the provider cancelled the booking, overbooked or had no record of the booking, or the room was sub-standard or different to what was booked or advertised. Yes, it's a problem, but everyone can easily solve it. There're a lot of servirces that can help you and check everything before yours arrival. Well, let's summarize. If you want to avoid any problems, you have to сheck for your documents and tickets, see if everything is okay with a hotel room, airplane flight and try not to forget your luggage in different places.