^This^
I can totally understand the thinking that trying a shorter trip first seems safer in case you don't like it. But I would argue that it's possible starting with a shorter trip may cause you to dislike it. Much of this is because of the accommodations available, especially for a couple. It's more common for trips of a week or more to be on boats that have individual cabins with en-suite baths and other amenities. It's more common for shorter trips to be on boats with bunk arrangements and a few shared heads and showers and generally less space.
Shorter trips certainly have their place, they're great if one of those trips does a specific itinerary you want, fits your schedule, budget, is somewhat local so you can do a quick trip without flying, whatever - and you understand what you're getting into, which you may not if you've never lived on a boat before. But if you're not tightly constrained by time or budget and want a nice dive vacation with your spouse, I agree odds are you'd find a week on a nicer boat more enjoyable than roughing it for a few days. On a short trip, you also lose some of the experience of setting up once and diving for many days with little effort. There is an extremely good chance you'll feel like you just got started and really don't want to rinse and dry and pack up yet.
The classic week long Aggressor type boats itineraries are prac
