Home now! All was fine, managed to get on the train from Garve ok without a booking, and there was only one bike on(but train was full for Localsh).
When I got to Inverness, there was only 5 minutes spare to make the connection for the stirling train, so just went straight onto it(the ticket checkers at the gate just told me to buy a ticket on the train). Even though it was fully booked for bikes, there wasn't any on the bike rack(and none turned up further down the line!), seems a bit of a weird system where people can book bikes on then not turn up.
Only problem was some moody people who had dumped all their luggage in the bike area and were a bit arsey when i asked if I could move it(and then move it back in front of the bike once i had put it on the rack).