There is a 92nd Napoleonic reenactment group here in the Netherlands, so basically the 42nd but with yellow facings, collar and cuffs instead of blue.I know, Duuring already tried to convince me some months back.
I wouldn't go and do a Highland regiment impression, most of the times (from what I've seen), they're not done well ranging from the uniforms to the musicians playing alongside them.
From what I've heard from Duuring that 92nd group is pretty much an exception to that rule.
Anyway, being a drummer for Highland infantry is just plain badass. If you know how to play the fucker, that is.
It takes years to perfect playing any instrument, so IF you'd like to play the drums you shouldn't do it merely for reenacting. As for the 92nd reenactment group I wouldn't know. Kilts / Jackets / Glengarry Bonnets and other accessories are very expensive (and thats for modern Highland clothing, if you'd want to do an impression of an early 19th century Highland infantryman you'd have to get it ALL custom made) and I'd be surprised if reenactors would use quality highland clothing. I don't mean to discourage you (after all I'm not a reenactor), but if you'd want to do a historically accurate impression you'd have to spend a good amount of money.