I want to say 2 things on this. 1
if you keep the snake at another place be sure they(person that has house)is willing and able to do basics maintenance like feed and clean the cage. ( if you come down sick or get injure it may be hard to do everything and maintain the qt)I would suggest that if possible you get a shower once back home.

the second thing is also . If people think about it, there is the chance of picking something up at the show (healthy animals can caught something if a less than honest vendor is there too ) . even with all the hand sanitizer around.