I went last season and i parked in a housing estate about 2 mins away from the ground. Try Cambridge Road, Rutland Avenue or Highbury Road. The latter might be a bit busier, but worth a shot.
Was street parking pretty much outside the ground last season. Stewards/Police mentioned trying to bring in permits so duno if that option will still be available. If you can't just park up by the Fishermans Friend factory.
Could just tram it from Blackpool to the stop bang outside the ground. After the game trams back to Blackpool should be pretty regular still. Definitely recommend going in their social club behind the home end goal. Away fans welcome, lots of drinks, get meals, watch Sky Sports etc all you'd expect. Puts plenty of clubs including ourselves to shame for a club of that size to have something of the size they do.