You'll be on a Virgin Super Voyager. My regular commuter route from Preston to Bristol.
Bikes normally at the rear, hung from hooks in what they used to call a guards van. The bikes can sway a little, so the protection is a good idea. You can open the door yourself to get on a get off.
Even if Mrs TKP is riding "lagged" into Preston, there will be zippo chance of weird looks. We are all weird here....
Wave as you cross the bridge just outside the station.