Accommodation
When there's no space at the hotel
No vacancies
When you show up too late for the flight
Missed a flight
When you get to the beach and you don't have a swimming costume
Packing the wrong things
When there's nothing you like on the menu
Bad options
When you don't know where you are
Getting lost
This noisy thing might be outside your room
Building site
When there's not enough seats
Overbooked
When your bag is too heavy
Over-packing
When you eat and it makes you sick
Food poisoning
When you can't agree on what to do
Arguing
This might be a nasty surprise when you check out
Hidden charges
When the plane is very late
Delays
When you get to the country but your bag doesn't
Missing luggage
When you don't understand the menu
Bad translation
When your friends don't show up on time
Being late
This might stop you sleeping, especially in a shared room in a hostel
Noisy neighbours
When the plane doesn't show up
Cancelled flights
When you arrive at the hotel and unpack but it's not your stuff in the bag
Picking up the wrong suitcase
When the food is bad
Bad chef or restaurant
When they want to go partying all night but you just want to sleep
Different desires
Your own problem with accommodation
Sounds terrible
Your own idea about travel
Sounds awful
Your own idea about luggage
Sounds horrible
Your own idea about food
Sounds disgusting
Your own problem about other people
Sounds unbearable