At first I thought the same. Surprisingly, while Goldshire was "Campers only", "Azure Watch" was working as intended - just people hunting eggs (running around like crazy, bunnys on speed). Therefore the pain in gathering all the eggs was rather small.
I didn't get a tuxedo shirt but that was no problem as that is not part of the achievement (thanks blizzard).

No reason to camp. Just get a little route going and find those random spots and steal them form all the campers who are only half paying attention. This has been by far the easiest meta for the mount yet.

On my main i tried camping.
It was rubbish, it's a significantly worse idea than fishing(Which i enjoy) I even found a spot where 4 eggs spawned in clsoe proximity and it's just not the best method. Took me a few hours to get 100 which was what i needed for the pet(And the only thing i wanted)

Subsequently i sadly discovered that "The noble" is a title that would suite my alt so i decided to go through it all again. This time he wanted all the achievements so i was erady to have to farm 475 eggs. I decided this time i'd try running around and that i'd try it in Azure Watch, i got my first 50 in less than a hearthstone cooldown, then i hoofed it over to Dolonar for a change of scenery and got another 80 in as much time. Which, due to lucky drops and the rabbit maen ti could just sit down and eat the lot, buy an egg and a tuxedo shirt and i've got a few days left now to mooch about some deserts.

I'd defiantely reccomend running around, camping is too slow a process and i'd equally reccomend Azure Watch, Dolonar and even Kharanos over Goldshire for the alliance. I actually found Kharanos to be the quitest in the end oddly.(On my server)

The flower planting, bunny maker and other achievements don't appear to have a "During the noblegarden event" disclaimer, out of curiosity anyone know whether these achievements can be achieved outside of the world event?

Simply putting these eggs in areas where there were wandering mobs would have solved the issue of campers. Heck, even low level mobs...stupid Campergarden.