I don't know, I think the Snow Park would need too much mana to be worthwhile at Doom, plus you don't want to make the Kraken chilly I'd build a Boom Gate to the top of an existing mountain with snow/ice and have it as an associated theme park.

As far as a water park? Well, we've already got a big tank with a Kraken in it. If people like to pet dolphins, what about petting the Kraken?

I'm not sure if we could get enough insurance for the park to let them pet some of our other underwater guests. Old squid head & crew would be nearly impossible to get insurance for, I can guarantee that getting Lloyds to cover them would literally be an "Eldritch Horror" One guest accidentally (ahem) sacrificed and they escape!

Tentacle-chin's got one buddy who is very hard to put an APB out on because his name is quite literally 'unspeakable' How do you communicate that over the radio?

I suppose, but how do we get the demons to the material plane? I guess we'd have to keep a portal open since most demons can't travel there on their own.

Hmm, not sure where that would be, Limbo and Purgatory are very high traffic zones.

The elemental planes have no visitors since they don't support life, mortal or immortal....

Well, not sure it's a theme park...I suppose it is, they got their dead up there cavorting in the fields and valleys.

Although one has to wonder what sort of afterlife it is if you spend eternity waiting in long lines to get on a ride?

Wait a second!!! A theme park doesn't need to be built! We could just use dream sequences from tartarus!

Ugh, Dream waiting, so much worse than real waiting.