We go on sausage walks, we celebrate birthdays, we like them to have nice harness and leads
Not quite as unique as you may think LittleLongDog. Our local park has a "sausage walk".
There is also a "spotty dog walk" (umpteen dalmations bounding and leaping in a batshit crazy fashion";
A "Bull-breeds" walk where all the pugs, bostons, bulldogs, frenchies etc gather for a more stately promenade;
A "pointy dogs" walk with whippets, greyhounds, salukis etc;
A "spanners" walk (the one I go on with my cockers and springer) - boundless energy and barely contained lunacy, with tennis balls;
And - perhaps the most impressive of all - the "hounds" walk - with the beagles, harriers, bassets and even an occasional foxhound. I say most impressive as you tend to hear these - in the distance - long before you see them - and when you do see them it is often off-lead, in the distance, racking through the trees in a pack. It's like a wave of tan, black and white just rolling across the green - it's brilliant.
And there's a "learn how to be sociable" walk led by a local dog trainer (for bouncy puppies)
The park is shared with walkers, joggers, cyclists, horse-riders, families out for pic-nics, school groups and just people out for a stroll. I have never witnessed nor heard of any trouble. People tend to admire the dogs and be pretty relaxed about things.
(It occurs to me that I've never seen a border collie walk, even though there are many border collies - possibly it's because they would all herd everyone into the centre of the park and keep them tightly controlled, and none of us would ever get home . . . 
)
These walks don't occur on a daily basis, but they happen regularly-ish - and are great fun!