A. Do you think snakes need an acclimation period of a week before feeding?
Yes and no. Depends on what type of snake and if it is a very nervous one or not.

B. Do you think it is necessary to wait 2 days after feeding to hold a snake?
Yes. I always wait at least 2 days so as to not disturb it while it is digesting.

C. Do you think it is necessary to not hold the snake the day of feeding?
No. I've held them on feeding day or changed substrate and never had a problem.