With being likely a sell-out or very close to I wonder if the stewards at Reading will try to make you go to your allocated space, if so then I can see some of the older fans and those with kids being annoyed as the whole end will be standing.
If you look on the Reading ticketing website we have the whole of the south stand which holds up to 4300, suspect initial allocation will be approx 2000 and will then increase to something like 3500
however the family section is at the opposite end to where the Albion fans will be, if you have a child and fancy taking them to this game there'll be plenty of seats down near the front available or they could always stand on their seat to see which I've seen a few kids do recently at away games.