Out of curiosity. Where are the temporary changing rooms situated? Just been looking at the planning application to see if I can spot them on it. No joy though.
I traced the route from that video the Plymouth fan posted and it looks like they're somewhere around the carpark at the bottom centre right. The route goes through the conference room then along the corridor to the left of the away changing rooms then left where it says 'Players, officials & team staff before turning right down the tunnel to the pitch. When I have time I'll do a better check of using the post match footage (counting ceiling tiles etc) and do a mark up.
In light of the previous comments about completion it suggests that the tunnel cam view is showing a tiny proportion of the back of house facilities - primarily corridor areas with ceiling tiles waiting to go in.
That plan can't be the latest as there are a few details out of place.
*edit - that looks like the planning drawing for ground level. There were definitely changes from that as the retail store is now being built next to the Albert. I;m not sure if there's an updated scheme in the public domain.