Same here. I don't ever wear perfume, but I always try on a selection when going through Duty Free. Pretty much the only time I buy a ready made sandwich either because I don't really like them. But I still look forwards to a Boots Meal Deal for the plane, for some reason.
For me, the holiday starts when I get through security because that's when I stop stressing about sleeping in (nearly all the flights we take at at 6-8 am so necessitate a 3/4 am start), crashing, flat tyre or motorway delay on the way to the airport, or hour long security queues and early arrival at the airport because nothing has gone wrong means that we have a good hour to wait to board.
I rarely drink at the airport on the way out but understand why people do, a lot of the time it signifies the start of their holiday.
On a regular trip we do, we always have brunch at Giraffe with a pint at Malaga airport at about 10/11 am on the way back and on our holidays in the Med, 11 am is 'beer o clock' and while we'll have a beer then, a couple with lunch, another one on the beach mid afternoon, a beer or G&T before we go out to dinner, one or two with dinner and then a night cap, we're never drunk, even though we've had a few drinks across the day because they're all small and well spaced.
But of course, on MN that would make us raging alcoholics for drinking more than a thimble full of sherry at Christmas.