Mandy - definitely not a stupid question. When we get our final paperwork (about two weeks before we go) there will be clarification of the plans. We may or may not have access to an airport lounge prior to our departure. This is simply a room within the departure terminal where you have comfy seating, nice toilets and free drinks and snacks, TV and newspapers. This is a nice way to meet everyone as we are all in a relatively small area. Usually access to this is allowed two hours or so before the flight leaves. If we don't have access to a lounge, it is a bit like pot luck if you find anyone else before you get to the departure gate. Some people prefer to stay anonymous and do their own thing, others display their Just You baggage labels in the hope of finding the others, or of course you can use this site to arrange to meet up.
The rep may or may not be travelling with us. If they are, they will often be found hanging around the check in desk. If they are not, there will be a JY rep to help you check in.
Essentially, you check in yourself as and when you want and make your own way either to the lounge or to the departure gate when your flight is ready.
I'm quite happy to meet you at check in, or if you are coming later than I plan to, I will let you know where I plan on having breakfast. Terminal 1 isn't particularly big so it shouldn't be too difficult. I can also email you my mobile number nearer the time so we don't miss each other. (This also applies to anyone else who would like to meet up beforehand).
Please feel free to ask any other 'stupid' questions - I remember how nerve-wracking my first trip was and am happy to help.
Sally