Our center is a fairly new one (less than 5 yrs or so and we have already outgrown it) and we asked for showers to be figured in to the design. We were told that a neighboring center had them and they were not used so we would not be getting them. It would be nice to have them available for those times when we have to go from work to a function but a strong dose of antiperspirant and good handwashing usually suffice. To be fair, I really don't think that the number of drivers who would use them would justify the expense of not only designing and building them but cleaning them.
As far as wearing the uniform, when I first started 19 years ago wearing the uniform to work was not allowed--we changed before and after each shift. Now, very few drivers (if any) change at work. I don't--it is so much easier for me just to get dressed at home but I do try to limit any stops that I make either going to or coming home from work while in uniform. I think this stems from my time in the military when there were restrictions on when and where the uniform could be worn.