Just don't venture off the sea front. We had to find a tescos for the nippers tea, and it is horrendous, even just 1 road back from the front. Tattoo parlours, cash converters and crack whores littering the streets
Seriously, avoid anything off the Prom, especially Central Drive which is at the top of the road opposite Central Pier its a mess with all sorts of characters about.
If you do go for a walk, be wary of anyone hanging around, especially between the central and north piers, arcade wise coral island is the best with the central pier one as well, the others are full of scallies.
I love Blackpool and go weekly, as I've mates there who I have known since school, but the front is all razzmatazz with major depravation only a few streets back.
We are going next Saturday through the lights and its likely to be a nightmare with the traffic but I've a mates drive I can use as a back up plan for parking. When I go blackpool, I avoid all the places I've mentioned.