I do not know about other services but on the Albury train, you would be VERY lucky to get a 1st class seat on the day of travel, you have to book a 1st class at LEAST a week in advance. If you wish for a particular seat make that at least 2 weeks.In the past I have known conductors on the UP Swan Hill after leaving Castlemaine when the non-reserved cars are full and standing to advise pax to sit in the spare seats of the (reserved) BRN or pay a surcharge for travel in the relative tranquility of the ACN.How does one go about upgrading to an ACN seat when travelling on a MYKI Mike?
I for one would do this if I knew it was possible!
When I've done it, I've gone to the booking office at Southern Cross (presumably you could also do this at other stations too) and asked for a First Class upgrade on (whatever train you are travelling on). Cost is $8, they will give you a old style V/Line paper ticket, which has your seat number on it.
You also have to to touch on you Myki when travelling, and when the conductor asks for you ticket, you need to present both the Myki and the paper ticket.
First class on the Albury train is always full.