I'm a little nervous about the "no set time" thing, but I think it will work out ok.
We're encouraging you guests to go to the peruse the various stations and steer discussion. Remember, we're not there to hear ourselves talk, we're there to help you with what you need help with. You likely have specific questions, and there's just no way to anticipate them all and cover them all without also wasting much of your time on stuff you don't care about. So we have broad topics, use it as a template, and then ask the instructors to get more specific on whatever you want them to cover.
Talk amongst each other too. Form small groups with those with similar experience levels and similar interests. So maybe a group of you determine that you need to learn how to tie a ___ knot. Well, go as a group and ask the instructor at the appropriate station to help. But you don't have to stick around and watch him teach a different knot that you already know, that'd be a waste of your time.
Kray, you will be needed. Some station is going to get mobbed. Some may run out to the yard to do a short casting demo, and need a cover at their station. And many instructors will want want to become students, take a break and go see Old Lefty.