Most grocery stores or drug stores sell foam ear plugs. Get the ones with a 32 or 33 NRR. You won't hear a thing.
Oh if only that were true.
Despite everything, DH and I slept apart for something like 4 years, until he was FINALLY diagnosed with sleep apnea (worst case his doctor had seen in 5 years, and his doctor works at a big sleep clinic in Seattle). He got a VPAP (like a CPAP, but the air pressure is Variable) and his pressure is set at near hurricane strength. The machine is actually pretty loud, too, but recently he got a new, better, mask and I can FINALLY sleep through the night (unless he gets a leak in the mask...that wakes me through the serious earplugs).
For those who snore badly or who have people who snore badly in their lives...I might recommend a sleep study! The snorer in my life is a lot safer now...he is less likely to die in his sleep from HIS body trying to kill him, and he's less likely to die while sleeping from ME killing him...sleep deprivation by snoring starts to make you somewhat bonkers!
OP, I know you want AKL (did you look into a rental, by the way?), but a less expensive villa would be OKW. Lovely, BIG, and the points for it are lower so a rental price would be lower. Might be worth looking into. Very very different than AKL, though.