No advice except to know what the situation is for lunch, take water and sunscreen, and an open mind. I was definitely the only one in my class because I wanted to be, BUT the rest of my group was really interested and most of them did extremely well. They all ate up the material, learned a lot, and genuinely seemed to want to take their newfound skills into their jobs.
We didn't take a ton of breaks, but I think if I'd needed to pump my instructors would have accomodated me. Our class was pretty laid-back, though, and I'm sure they're not all that way.
Given how much you know from being here, msg, I think you'd be fine. I didn't need any out-of-class studying, and I drove two hours each way three days in a row (yeah... but it really was the best class of my options) and I survived. :thumbsup: It helped a not to be familiar with the bulk of the material.
The only other piece of advice I have is to practice biting your tongue, decide what's important enough to you to contest, and rehearse how to contest it. There were a few things said that I didn't agree with, or felt needed clarified, and I was really careful to pick my battles. Sometimes (like with ERF) I shared my experiences, and that you CAN successfully RF older kids... sometimes I asked a question to further an explanation, even if I knew the answer.