I think those of us that are real frequent flyers, and who know the drill, are a) prepared b) reasonably accepting that Stuff Happens (because we've seen it/experienced it from time to time) and c) not the pushy demanding types because we know we'll get there and berating service people or being rude to others won't help things.
Me? I always try and be helpful in a situation or at least understanding and trying to work with staff rather than against them (luckily "situations" have been few and far between!) and not uber demanding. I don't roll over (for example some years back a cancelled flight with a J cabin and fare they wanted to pop me in Y on a Dash8 and I was firm on ORC) but hopefully reasonable about it all.
Yes, I sometimes get frustrated specially behind noobs in security lines that somehow think "priority lane" means then (true, they may be once a year flyers in J, but I see so many I really wonder) but I just try to be cool and wait quietly while they sort their cough out, or if possible without being rude go around and get through while they figure out their jackets and phones and all the rest.
(yesterday I saw a woman at the priority queue in MEL having an argument with the guy about her aerosol hair spray .... )
When it's old hat we just get on with it and not make a fuss.
And you know what sometimes it works for us to be reasonable. eg some months ago at a Crowne Plaza, I arrived after the stated check in time of 2pm for my room. It wasn't ready yet I'm line fine no worries. I'm an IHG Plat (who isnt right?
) but didn't play that card or be a jerk (it was like 2:30pm) so I just said hey no worries I'll go for a walk down to the beach and be back in 20-30 minutes. I came back after a nice stroll. No problem here's your key, and we've comp'd you breakfast for the delay and here's a couple of extra free drinks too for being so understanding" I didn't go out for that, but it was nice and I enjoyed my brekky !