They have been rearranging the casino, mainly to accommodate a new cardroom. They were telling me a few weeks ago that the GUKPT wants them to take an event, so I guess they should be able to accommodate APAT. Haven"t seen the new layout yet - 70+ doesn"t sound too promising, but perhaps they could make special arrangements for a big event, commandeering some of the eating area, for example, like they do in Brighton. I"ll let you know what its like when I next play there.
Gunwharf Quays is a super location with marina, loads of restaurants facing the sea, nightclubs, cinema, bowling. Its also a designer outlet centre, for those who are interested in that kind of thing - can"t see the attraction myself. More interestingly, for some incredible views, you can go to the top of the Spinnaker Tower, the highest publicly-accessible structure outside London, higher than Blackpool Tower, London Eye, etc, etc and walk on the largest glass floor in Europe over 300 feet up.
http://www.gunwharf-quays.com/http://www.spinnakertower.co.uk/http://www.forms.portsmouth.gov.uk/webcam/tower.jpg