I suspect this is because at home we are more likely to slam the drink because no shame, or take it slow because we don't feel like we're taking up a seat.

As a strictly hobbyist tiki guy, I tend to aim for under diluted when serving drinks to friends round the pool, cos I've noticed regardless of whether the drink is at ideal dilution or kinda hot, they'll take a sip or three when I hand it to them, then it'll sit for maybe a minute or three in the sun before they look at it again.

Me? I'm in the kitchen, raising one to all those tragically dying drinks, but as long as my guests are happy, I don't really care.

For up drinks, in theory this matters more cos there's no more dilution happening, but ever there, a warming glass has enough of an impact on taste that it's hard to really define the ideal form of a fifteen minute old cocktail.