Just a simple question! Come in please!

[roseriver1012]

a free 7-day trip or a 7-day free trip? Give me your opinion please, and thanks!

 

[Barb_D]

I'd say a free, 7-day trip. The comma is optional.

 

[tedtmc]

In order of importance - free, then the duration

not a teacher

 

[Tdol]

You could have it the other way round in certain contexts:
'It's a free trip.'
'Yeah?'
'Even better- it's a 7-day free trip.' (this works because 'free trip' has already been mentioned)