urination is what it is, if they had to go they did. stress might have played into it but I wouldn't say that it caused it. You would be pretty pissed off as well if you were in their shoes. how they react to shipping all depends on the snakes personality and how well they were packed/how smooth the shipping went.

You should wait a full week without bothering them then you can try to fed them. do not handle them until they have had 2 consecutive successful meals.