SueZQ - I do see your points, however, whenever there is something family related going on in my family, my friend is always the first to say that she'll host it. When my younger sister was married, she hosted the wedding and reception there, plus oversaw the ceremony because she's an ordained minister. If I were to mention that I was bringing up a quilt to thread baste, trust me, she would be all over it and would expect me to bring it to her place. I've known the woman for over twenty years.
As for the plywood - I would bring it home with me, this is something that my fiancé and I have been trying to do but can't because we live in an extremely rural area and our building supply store in town recently closed. Getting plywood right now is one of the most difficult things to do, we don't own a truck and no one around us does, either. My younger sister would be bringing me home and she has a truck. Although, bearisgray - the idea of a cardboard refrigerator box would be much easier to handle and we can recycle it after we're done. I didn't think of that, that's a great one.
She does not use her dining room table but for the holidays or she's hosting a get together, the table she uses regularly for her and her husband is upstairs in the kitchen. The quilt wouldn't stay there until I left to come home, once we basted it, I'd either put it in a bag or I'd snap my lap frame on it and fold it in on itself, either way, the quilt goes with me.