Hi Julia,
Thanks for your message - i hope i can put your mind at ease.
Grand Canadian Adventure isn't a new tour, it has featured in our programme of tours for the past couple of years and has always been very popular! Your didn't mention which date you were booked on, but there are 3 dates available, 2 of which (03/05/08 and 31/05/08) are full, and the other date (30/09/08), currently has a third of the places full - with plenty of time still to book!
Hopefully by posting a thread on the Community you'll attract some other Just You holiday goers who are also on this trip.
If you have any other questions please don't hesitate to get in touch.
Warm regards,
Cheryl, your editor