Question about PO Box deliveries from Bodyline!

[luciannamarie]

Hello everyone!
I'm hoping someone could help me out!

I've ordered from Bodyline for about 5 years or so now, without any incidents. Always delivered on time and such. I've almost always had to sign for my packages.
My problem is that I'm spending the holidays with my family and they have no mail delivery to their home, only to a post office box.
I want to make an order from Bodyline for Christmas, but I'm scared they won't delivery to a PO Box.

Have any of you ever done this? Do you know if the post office will hold the package because it won't fit in the PO Box?
Do I have to sign with the post office?

I just don't want to have any crazy run around incidents! Any advice would be greatly appreciated!
Thank you! <3