How do you get sailor Eldritch to take you to Fullmoon Island?

so easy you need a action reply code so you can get there and catch darkrai

Sea Legs And A Parrot

i did it by getting D's action reply and when Ur on half moon island go to the right and walk over the water to get there

After going to fullmoon island, you need an Nintendo event to go to new moon island.

first, you have to beat the elite four. then, you go to canalave city and talk to the sailor that takes you to iron island. next, he will ask you if you can get the lunar wing for him and he will...