I have said more a few times about the size of the casino but as it supposedly had 4 roulette tables (either all together or at different times) it would have taken up less room than 2 other FR tables but no problem, it was just another example that can't be confirmed either way and if you wish to decide that is not the case, it's entirely up to you.
As to them being used on an AR style layout, yes maybe some bright spark did have the brainwave to do that or maybe they thought that it would be less hassle (and a lot less disputes) to actually have thought about using the AR idea of different colours and no denomination on the FR table.
The photo of the Portsmouth FR table shown ages ago now (seems like years) looks like it had different colours which would possibly back up the 2nd idea especially as no denominated FR jetons have been found although they could have been destroyed without any escaping, I suppose.
As there haven't been any photos found that show the layout of the tables within the club, we don't know how the floor space was used to house the tables but any speculation may bring out more ideas from others hence my mentioning the other possible options.
To be honest, everything that has been said so far has been speculation so take from it what you want.