We'll be hearing light fare, including a Weber Overture, the Tomasi alto saxophone concerto, several Strauss waltzes, a Puccini opera excerpt, and a bit more...
... luckily, nothing whereby I would be distracted by anyone's tuba playing one way or the other (as it's much nicer to listen to an orchestra than to "how the tuba player is doing").
If I'm able to meet up to make a trade with someone (in a suburb up at the north end of Greater Pitts'), I think I might be coming home with a later-vintage (thin-wall brass - avoiding top-heaviness) King sousaphone bell - to use as an alternate bell for my fiberglass King sousaphone.
(I tend to believe that the fiberglass elbow tends to absorb some of the air column vibration at the end of the instrument; not that it changes the sound that much, but that it reduces it just a little bit.)