My first ever flight I was 16 and travelling solo to Australia, so quite a big first trip.
There were 2 stops scheduled, Bahrain and Singapore where I was to change planes. There was a sand storm so planes could not land at Bahrain, we were diverted to an 'airport' that basically had a control tower and a runway.
As there were no facilities at the 'airport' they kept us on the plane, they ran out of drinks, it's not much fun sitting in a desert in a metal tube with nothing to drink.
We were delayed for about 4-5 hours before getting to Bahrain. We got to Singapore but of course the connecting plane had gone so QANTAS diverted a plane due to fly direct to Melbourne to Perth.
The passengers heading for Melbourne were not happy because it added hours to the journey and the law then (may still be the same) said you have to go through immigration at the first point of entry, so everyone had to get off, go through immigration and the the Melbourne passengers had to get back on the plane.
I have a cousin who as a child was always ill on holiday. His parents, him and his sister went to visit friends in France, cousin's appendix burst and was removed thanks to the French health service. As it was only a quick trip to friends the parents hadn't bothered with what was then an E11.
The hospital were very good and said when you get home get one and send it to us sothe finalbill was only about £30.
Another friend was doing a working holiday in Australia. The day he arrived he couldn't get his money out of the bank because it was Sunday, the hostel wanted upfront payment for the fullstay, he had enough on him for a coupleof days but not the full stay.
Eventually he got booked into a hotel using my credit card. The following day he went for a look around Sydney and sort out the bank account (understandably when you open the account abroad you have to go into a branch when you arrive) and bought a chocolate bar, bit into it and broke the veneer off his tooth, got back to the hotel, they put him in a taxi to a dentist.
But of course he didn't have any money yet,the dentist was going to keep his passport until he realised my friend couldn't access his money without it.
My grandmother was sailing to Australia (No idea why these mostly involve Oz) in the 1960s, it was a 6 week trip.
The boat developed a fault between Southampton and an Italian port, it took 2 weeks to mend the fault, passengers were offered a choice of 2 weeks in a hotel or a med cruise, gran took the cruise.