1
I always pack too much stuff when I go on holidays.
I always pack too much stuff when I go on holiday.
When are you coming back from holidays?
When are you coming back from holiday?
In British English, use the singular form holiday in expressions such as go on holiday, be on holiday and come back from holiday: ‘I don’t get up early when I’m on holiday.’
American English normally uses vacation: go on vacation and be on vacation.
We can use the plural holidays in expressions such as our holidays, the school holidays and the summer holidays: ‘We are going to Croatia for our holidays this year.’
2
I need to make a holiday.
I need to make holidays.
I need to have a holiday.
I need to take a holiday.
Use have a holiday or take a holiday, not make a holiday.
3
We have booked a fantastic holidays.
We have booked a fantastic holiday.
After a/an, use the singular form holiday, not holidays.