I went in April and it's super easy to get bud in aruba . I just wore a cookies tank on the beach and I had people running up to me it was pretty funny.
Customs is super laxed as well didnt even deal with a person just passport scanner machines but I still would advise against that.
Do yourself a favor and score once you are there. While the chance of getting caught is pretty low and they are pretty relaxed, getting caught would be a nightmare and you DON'T want to be in one of those small Island jails. Seriously. A walk on the beach will provide you with many chances to get your mojo.