Hi Caro23,
Thanks for your message, while we are unable to share exact numbers of those on the tour, Croatia is a very popular tour and we expect it to be fully booked.
It could be that fellow travellers on the trip are yet to join the Forum, or perhaps haven't seen your post yet, so might be worth giving it a little more time for people to respond. When you travel, I'd recommend placing one of your Just You luggage labels on your hand luggage which will make it easier for people to spot each other at the airport.
Best wishes,
Just You Team