Do they exist?
I can’t see a colony being started as a vacation destination for the very wealthy; but I can a colony evolving into one. Perhaps the planet was chosen for mineral deposits under the oceans, but the mostly untouched continents are picturesque. There would need to be something exotic about the planet to attract visitors, neon purple sand beaches, 2000 ft trees, or something ever better.
The best bet would probably be a colony close enough to the Solar Union to require only one transit gate jump. A roundtrip ticket would be very costly, but there are likely enough extremely rich individuals in the Solar Union to support at least one resort colony.