What does “for about a month” in “for about a month of European festivals” mean in this sentence?

Question

You're all going on tour for about a month of European festivals this summer.

What does "for about a month" mean in this sentence? That they're going on tour in a month or that this tour will take a month?

Thanks. :)

Answer 1

for about a month

the duration of the tour.

Contrast with these that tell us when the tour starts

... in about a month

or

in a month's time you're all going ...