My family will be arriving there, and my wife wants to stay for a week to visit around LA. Could we leave our luggages there, then we will pick them up when we flight out from there?

Not allowed to be kept there for that long when you leave you have to take your luggage with you

The USO does not store luggage. They will turn it over to airport security. They have a small luggage area and this would be a grievous violation of decency.

We just recently stayed there overnight (no choice, someone had driven us there from a few hours away, and had already left), and we were there from 9am on the 1st to 12pm on the 2nd. We were able to leave our luggage in the cubby area, but we never left the place. Out of curiosity...why wouldn't you take your luggage with you to wherever you are staying?

The longest I left my luggage was probably about 9 hours while I toured LA. I guess it all depends on what they have going on.