Hi there
I did the previous version of the Western Wonders tour which was called 'America's Golden West' and had a great time.
In my experience, it depends on the tour but sometimes a Tour Manager will travel with the group from the UK. In that case, they will probably meet you at the gate (or in the lounge if you have a free lounge pass as part of your package). If they are meeting you on arrival, it will be by the baggage carousel and they will be waving a JY clipboard. They will have a group list and will not leave without you. You will also be sent JY luggage tags with your final documents and many JYers tie one of these to their hand luggage in the airport so that they can identify each other. Usually, JY have block bookings on a plane so the chances are that you will have met some of the group sitting next to you before you land!
I've been travelling with JY (and Travelsphere) for nearly 20 years and definitely recommend that you give it a go. All the logistics are taken care of so you can just sit back and enjoy your adventure. Just think of your tour group as friends you haven't met yet and dive in!
All the best
Mandy