'Bachelorette' Kaitlyn Bristowe Still On Cloud 9 With Shawn Booth

'Bachelorette' star Kaitlyn Bristowe and her fiance, Shawn Booth still aren't hitched, but they look like they're practicing for their honeymoon.

The couple are on a romantic getaway in Hawaii .... stand up paddleboarding, drinking and such.

They've been engaged since last July's season finale -- so, as of now, they're one of the rare couples from the show that could actually be the real deal. For now.