Planet Replicas will be there !
Its my home town so looking forward to a con I can literally walk to - the novelty!
( Im hoping they can do some thing with/ in the i360 seeing as its quite futuristic ? )
Brighton is highly recommended for a day out, the local shops beat London for their originality, crafts and variety, the restaraunts are great, pubs even more so, and of course there is the beach and pier.
Theres also the Levels - with a great purpose built skatepark and playground.
Family members would run out of time long before they can get bored.
I would flag the trains as being unreliable sadly, so account for this in your travel plans...I think the Gatwick Express to Brighton is normally running ok though.
The venue is probably a 10 to 15 min walk down the hill from the station to the seafront .
Dave's Comics is also a very good local comic shop, with a second shop two doors up offering some cool deals on related merch, back issues, board games etc etc
See you there !