You want to be there Friday night.
The cooks have time to visit and everything is more relaxed and sociable.
On Sat morning, do not bother the teams, they are getting ready for turn ins.
It is a much more tense and intense time. You do not want to interrupt their concentration.
Trying to talk with them on Sat has a much higher chance of getting a curt answer or no answer at all.
After turn ins on Sat afternoons, they want to hear how they did at awards and get home.
Do everyone a favor and visit on Friday evening. You will have a pleasant experience and the teams will appreciate your interest.