Borghese Gallery—will they let you in without printout of tickets?

This should be helpful:

https://community.ricksteves.com/travel-forum/italy/tickets-to-borghese-gallery-when-we-don-t-have-a-printer

Thank you Kathy for your reply.
We went to the Galleria Borghese today and used our phone photos of our tickets and had no problem. They showed the bar codes.
We had an amazing time! So beautiful!

I'm so glad you got in. I think the Borghese is one of the best museums in Europe, much less Italy! The sculptures are truly awe-inspiring. Even my wife, who is not interested in art, was visibly moved and impressed.

We are going in a few weeks but the only tickets I could get were for the italian led walk through. As English speakers we figured at least we could follow them throught he museum as they would point out the most significant pieces.

You're welcome, mlstimetotravel! So glad that your ticket downloads worked, and that you enjoyed the museum so much. It truly is one of Rome's treasures!