I would certainly not want strangers coming up to rub me for luck! Yuck!
My plan would be to wear a "disguise" that might make it through scrutiny by the lottery folks. A panda costume would be great, but a wig, cap pulled down over the forehead, glasses with distinctive frames and tinted lenses and maybe a turtle neck to hide the chin would all go a long way to making you less recognizable to all but close acquaintances.
If you see someone like that on the winner's pictures you'll know I hit the big one!
Good luck!