CmonAutumn how did it go? Good luck for next time. I am sure it will be fine.
My experienced was I found it fun, I enjoyed it all and I learnt A LOT.
My advice is for next time is:
Wear something comfortable, not a really short skirt that you are not comfortable in (like I did one of the days!) or painful boots (like I did on another day!!)
Be early (we were always late!) - being early means you can choose where to sit and you will be in the room as others arrive - easier to remember names etc and to be the smiling 'hi' person as people walk in. Whoever is already there when others arrive can sort of feel 'at home' (you've already got your coffee or tea, you know where the loos are etc) and so you can be a smiling face for those coming in late with no tea and needing the loo!
Remember you are being watched but try and be yourself. It's easier than you think! When your kid/s are with you then you will see there are so many situations where those social skills are helpful (if you have birth kids or have hung around schools you will already know this!). Situations like school plays, parent-teacher meetings, school meetings, play dates etc - all situations (IMHO) where it is useful to exhibit social skills like chatting to people you don't yet know, keeping things under control (feeling cross with teacher or a friends naughty child etc) and maybe being watched by other parents if your child has a tantrum!
I guess what I am saying as these skills might be useful later so try not to see it as a negative environment and more one where you get to show off your great skills and to ask questions, engage etc and really get your teeth into the situation!
All the best.