Visiting habits have changed a lot since the 80s and 90s. As already mentioned, the type of people visiting the town of Blackpool are visiting for different reasons, with family groups now favouring either cheap overseas holidays or, if they’re staying in the U.K., places like Center Parcs as opposed to traditional seaside breaks.
It’s no coincidence that BPB have changed their marketing, opening hours and ticketing structure to reflect changes.
BPB now go for the theme park market, which involves people travelling from other towns for the day purely to visit the park, and who generally plan their visit a week or more in advance, and usually prebook. As opposed to in the 90s when people who were already in the town would pop in for a few hours. It just doesn’t work like that any more and there simply isn’t the market for it.