@Freespirit24
Free spirit my arse. I have never known ANYONE get so wound up over such a trivial, non-issue! How the F do you cope with life? As a pp said, 'I am guessing you don't have kids,' coz if you did, you would know the stress and frustration of juggling things in life, real fatigue, and trying to be in 2 places at the same time then!
And you have to go home and get showered and changed??? What job do you do? Are you a welder or a brickie, or a fecking miner?
Our DC both have long days in professional jobs, often early starts, so leaving the house at 6.15am, and sometimes not returning til 8pm. When they are invited to a weekday 'do' they sometimes go straight from work, get there about 7-00-7.15pm ish, and then leave at 10 pm ish. Sometimes, they finish work an hour or so earlier to accommodate the night out... And then SHOCKER they manage to get up for work the next day!
In many jobs you can finish an hour or so early and make up the time another day.. My DC do this sometimes when they have something on, on a weeknight. They are in professional jobs though, where they organise their own workload and targets and goals. I can only surmise yours is a bit of low-grade job where you have inflexible hours, and have to answer to everyone in your office?
Unless you are 80, and/or you have mobility problems, or some kind of chronic illness that results in symptoms and meds that make you weary and tired, then YABVVU. I doubt any of that though, as you have SUCH a stressful and demanding job. 
FGS just don't GO if it's causing you soooooooo much bother.
As a number of posters have said, you sound mardy, entitled, and miserable, so I doubt you'll be missed.
That is the thing I am not trying to get inflexible. I said I am available any weekend, any day of any week but they are the ones dictating it has to be this certain Tuesday with no room for movement.
@thecatsthecats
I have FANTASTIC news for you, as scientists have now confirmed that this certain Tuesday does in fact count as "any day of the week".
I did LOL at that one ^ 