Paula
Please try not to worry too much. The below link should help you with navigating through the airport:-
http://forum.justyou.co.uk/thread-56965.html
When you get to check in either a JY Rep or the Tour Manager will hopefully be there to see you. If not, keep an eagle eye out for the JY baggage tags, and make sure you have yours prominently placed on your hand luggage. Don't be surprised if a complete stranger approaches you and asks you if you are travelling with JY - that is part of the purpose of the labels. Equally if you see someone with a label go up and introduce yourself. It may seem an odd thing to do, but we do it on every holiday and it is the best way to find your fellow travellers. When you get to the lounge have a quick walk around before you sit down to see if you can spot any luggage tags. If you do - introduce yourself (to the owner not the bag!). By the time you board the plane you should have met most, if not all of your companions and be ready to start the adventure.
I really can't praise this trip enough - you will have a fantastic time. As Hils says, if you haven't already, have a look at my review.
Have a brilliant trip.
Sally