A topside briefing clues you in to the lay of the reef, possible marine life, and any particular conditions or currents to watch out for. Divers who are comfortable with their own navigation ability and experience will find the freedom enjoyable. I can't stress the ease of diving from a live-aboard enough. If you hate to carry your equipment around, wash it off and repack it every time, this is for you. It makes getting ready easy and fast.
Some locations require dive tenders that are a little more work.
You get into a dingy and take a short ride to where you want to be dropped off, put on your mask and fins, get into the BC and roll over the side. When you surface, the dive tenders are nearby and pick you up. Getting back into the dinghy can be more of a challenge, but the crew is adept at hoisting slippery divers aboard. Live-aboards can explore untouched reefs, find that mystical spot in the middle of nowhere, and drop you there. Go for it.