Can't find any high level creatures!

[jg007]

try looking past Tia Dalma, sure I saw some giant alligators there

[WizardHawk]

If you look at my guide to the wild islands (in the tips and guide section) you will see islands there that have all of what you have mentioned and I do believe every one of them still has them.

For example, there are vampire bats in tormenta cave, huge alligators in cutthroat cave, and more than one has dread scorps.

Guide is found here: Complete Guide to the Wild Islands

[Rose Darkpaine]

go in to the Misty Mire in Tortuga... take the first left off the main area where there are two torches....
The huge gator comes out of the area to the right of the shack in there... he will reappear over and over.

[~Jade Heartbreaker~]

The vampire bat is in the thieves den in tortuga. It is sometimes in the mist/waterfall by the entrance in the graveyard but there is also one that respawns not far from the other entrance but the second way you have to go past all of the soldiers.

Dread scorpion on port royal is in the cave to the far right of the island when standing in front of the shipwright looking towards the town (sorry can't remember the name of the cave been there for the first time last night). You kill it step away and it respawns.

[Cannon Mad Dan]

There are plenty of high level creatures in Kingshead, as well as the caves spread throughout the islands.