a *few* comments....

1...plastic canister/container(s) --- i'd get 'em in Jamaica
..dunno where in Negril, but they're pretty easy to find, and CHEAP-CHEAP-er than in-foreign

2....buying stuff cheap(er) --- [[in brief ]], unless you GOT-TO, DO NOT buy nutin' IN-Negril .... Negril is the '.high-rent.' district ... everyting der is more expensive, compared to other non-tourist parts of the island.

I always chuckle when i hear Negril-residents complaining about the high-cost-of-living in Negril. ..lol lol lol lol lol... i tell 'em to get-OUT of Negril, and GO-BACK ah yard, where you came from,,,, where stuff is cheaper.

as you know, i stay in Lucea-area,
and commute to Negril
...BEFORE i come-over to Negril, i ALL-ways make-SURE i buy what i *need* IN-Lucea first-thing, before i hop in a route-taxi for the short 28-minutes ride to Negril. .....unless, i know of someplace in-Negril where i can get something-something for a comparable as-cheap price.

3.....my buying a bag of oranges, etc.... ALL-ways buy in bulk/large-volumn..!!..
..as long as you're gonna consume the stuff in a timely fashion

for example, if you, in your case, this-trip, need washing powder for laundry, dishes, cleaning, etc. .... then get the BIGGEST bag.... NOT the likkle itty-bitty bag

4....so,,,, you-SAY::>> the fridge *PROBABLY* doesn't have a freezer compartment eh
...ummmmmmmmmmmmm
WHY don't you KNOW..!!???????!!
..these are the kinds of things you'd BETTER ask-about
:-(

similarly, if you're gonna be there for 4-6 weeks, it's a good idea to up-front ask/inquire as to how/who gonna take are of maintenance of things ---- i don't have enough fingers & toes to count the times folks have shared stories about this-or-that not working, or breaking .... AND THEN the landlord starts to play *games* when it comes to making repairs/replacements

will you have a written lease-agreement with who-ever you dealing with..??..
if it ain't in writing, then it's *game-time*, EVERY-time

5....the food is too-too-fresh in Jamaica ---- don't waste stuff, buy getting too much
:-(
Jamaican food-stuff WILL go-bad quick-quick
..due to less or no-preservatives
....& weather conditons
.......and fruit-wise, it was picked when it was READY to eat
..........you won't get that NOT-RIPE stuff that you get in-foreign

ummmmmmmmmmmmmmmmmmmm....
so,
over the 6-weeks
you'll be moving around (for lodge-ing) eh

whatcha gonna do with all that food...??..
move it from place to place..??..