GACs in an island setting.

[UncleLina]

Warners.
Wackiki Wabbit
Robinson Crueso JR
Rabbitson Cruesoe
Bugs Bunny Nips The Nips
The Isle Of Pingo Pongo
Aloha Hooey

MGM
His Mouse Friday

[dandu]

Felix the Cat

Dopes it Out
Tee Time

Betty Boop

Is My Palm Read
Zula Hula

Popeye

Sinbad the Sailor
Pop Pie Ala Mode

[Matt the Y]

LANTZ
Fair Weather Fiends
Bunco Busters
Robinson Gruesome
Poop-Deck Pirate
Coo Coo Nuts

COLUMBIA
Ku-Ku Nuts
Uncultured Vulture

WB
Moby Duck

DISNEY
Hawaiian Holiday
Sea Salts
Hello Aloha

DePATIE-FRELENG
Pink Paradise
Tour De Farce
Isle of Caprice

Also, "Symphony in Slang" [MGM;1951] briefly takes place at a desert island (when John, in his flashback, relates how he went to the "1000" islands and became a beachcomber, with haircomb!). Also, "A Fine Feathered Frenzy" [Lantz;1954] ends at a desert island when Woody goes there to escape the man-hungry widow who's chasing him only to discover she has followed him in a submarine!

[The Budman]

Popeye:

Alona On The Sarong Sea

Shape Ahoy

The Island Fling

[frizfrelengfan]

Betty Boop's Bamboo Isle

[Alf]

I wonder why anybody hasn´t mentioned Terrytoons:

Swiss Cheese Family Robinson

A Wicky-Wacky Romance

[J. A. Boschen]

RKO Radio Pictures/Van Beruen
-Molly Moo Cow and Robinson Crueso

Mutt & Jeff
-Aroma on the south seas

[Bobby Bickert]

"Popeye's Pappy"