The only all inclusive vacations we take are cruises.
I totally hate crowds and people and I love to cruise. We get a balcony room and avoid the Lido deck (we eat all of our meals in the dining room) and we have a great time. If you go to the Caribbean, though, you will definitely get a more partyish crowd unless you go on a 5+ day cruise (preferably 7+). You're so close to Vancouver though, an Alaskan cruise would be great. I also think they sail out of Vancouver and go to Hawaii, but that will be longer and definitely not cheap. hehe