I mean there is an argument of improving the public transport links to Thorpe. As a theme park on the edge of the largest city in the UK, you’d expect visitor numbers to be far higher.
Thorpe relies more predominantly on car traffic (as do other RTP’s in the UK) when quite a large majority of their target age group (which I’d argue to be Gen Z and Millennials) probably, don’t have cars in London. You’re instantly alienating your target audience, in the immediate vicinity/catchment area of the park, quite quickly.
Although there are buses from Staines and the links from London are indeed probably better than transport links across other regions of the UK, I rarely see this spoken about or marketed in any way in terms of ease and convenience.
I think this all falls back to Thorpe’s functions not understanding their prospective customer well in my opinion.