I don't know about yachts and stag parties but golf clubs are DEFINITELY a "life necessity." So we should all get prebates on them.
actually let me take that a step further.
it wouldn't be long at all until a yacht construction firm funded "public health research institute" released the abstract of what we'd be assured was a well researched, honest, fair, and scientific evaluation deciding once and for all that milk was not a necessity, but a luxury, and it shouldn't be excluded. furthermore, milk in the poorer neighborhoods, due to how much better it typically is than the food the citizens are most likely to get, is actually a luxury
, and if you subsist on mostly tuna and dirty city water, you should be more than willing to pay a little extra for that milk.
at the same time, after receiving funding from the same yacht construction firm, cato or the heritage foundation would release a "ground breaking" analysis that talks about all the economic good done by the construction of yacts, how they employ tons of people (only ammrrrrcans), how the therapeutic affects of son bathing in the Mediterranean can lead to longer life, and how since they are quite obviously a necessity they shouldn't be taxed at all.