8d is quite ponderous, and (at least in my parsing of it) the cocktail is holding the son as opposed to the other way round. The “a” in the clue features in the answer too (if that’s not too spoilerific) but its position is also seemingly at odds with the parsing.
Unless I’m barking up the wrong tree of course, which is possible. The cocktail I can see involves wine floated on a shot of syrup.
I also couldn’t link “visionary” to 14d. I’m aware that some things which carry that label are 14d, but surely some are the opposite.
Nevertheless, really enjoyed it overall.