Couple of things...
You should be able to drop at the tee,, hitting 3 off the tee box (not teed up-unless I am mistaken)...see Fred Couples do it at he Players...but he may have went over the island green at Sawgrass-17 IIRC, he holed it for par.
Now WGT follows line of sight, just like the rules of golf say, and drops you on the tee side of "land"...as it should be.
So now the question is...is the sand you are dropped in considered a hazard or not?...i/e is it part of the course, say if you hit into it, you could ground your club or not?
My guess is, that area is not considered a hazard, because the Rules of golf state that you cannot drop into a hazard...so it must be deemed as "course" and you're dropped the two club lengths away.
Only other alternative is if there were designated drop zones, but none are here on WGT.