I’ve had the great good fortune to have spent several score of weeks on liveaboards, and have been happy to go with the flow whenever the chance to make dusk, night, or dawn dives were offered. Each type of dive has its own special appeal to me, and the benefits of each type is frequently dependent on location. In the vast majority of cases when such a dive is offered, I take advantage of the opportunity, and adjust my sleeping, dining, and libation ingestion parameters to allow me to make the dive.
A dusk dive in a vibrant tropical location affords the chance to see, (and photograph), the changing of the guard as the day denizens grab a last meal and seek secure lodgings for the coming darkness in what can be a virtual tornado of swirling, bustling, and jaw crunching activity.
The other worldly looking creatures that only come out in the dark are always a delight to see, and drifting along on a black water night dive is perhaps the closest I’ll ever come to the feeling of unaided flight, or performing a space walk out in the cosmos.
Got an opportunity to visit a wreck before the sun rises and being witness to the gradually increasing illumination and stirring of the day shift as the dawn breaks? I’m not going to miss out on that chance.
My perspective on the diving opportunities that are available on a trip is to take advantage of anything that appeals to me and can be done safely; then take care of the other details as a secondary consideration. Happy hour is not that important to me compared to the chance to make an interesting dive, nor is drinking alcohol with dinner if these activities interfere with being able to make a dive in a location that I probably paid a hefty sum to reach.
Is a night dive being offered after dinner, and you don’t want to feel to bloated and sluggish to take the dive that you’d love to make? Simple solution is to simply eat a little of your meal, and ask the crew to put the rest of it aside so that you can finish it when the dive is done. This also works sometimes if you simply wish to forego dessert and save it for a post dive treat, but while my partially gnawed on chicken bones and broccoli has always been readily accessible in the galley post-dive, I’ve often found that my personal brownie, cookie, pie slice, or apple cobbler has mysteriously vanished while I’ve been submerged.
The Aggressor Fleet came up with the slogan Eat, Sleep, and Dive. While I support that sentiment, I prefer to rearrange their verbiage to better suit my priorities: Dive, Eat, and Sleep.
BTW, I voted to dive after dinner. Night dives by definition occur after dark.