In some senses, the oyster is the original Geocache.
This quick puzzle cache is not on the hotel grounds and should be accessible at all times.
You can get the following answers by either consulting the hotel website or asking at the information desk.
The original Oyster Lodge was built on the site of the Oyster Box hotel in the year 1vwx.
There are currently yz rooms, suites and villas in the hotel.
Final Co-ords = S 29 43.ABC, E 31 5.2DE
Where ABC=vwx-109
and DE=xy-39
Who said puzzles had to give you nightmares. 
You can check your answers for this puzzle on GeoChecker.com.