I have seen my corns drink numerous times, most will drink out of my hand if their thirsty. But I remember when my first corn drank in front of me, I was captivated. I'm sure you will witness it alot more in the future. Whats even better is when you catch them shedding, if they notice you they tend to stop, I caught one of mine in the act last night but once she saw me she went into her hide and didnt finish the job untill I turned off the light and made her think I was gone. I'm waitin for my second female to lay her eggs in the next few days, I would love to see that as I witnessed a garter snake of mine give birth to live young a few years ago and it was fantastic, I think there were about 10 people watchin by the end of it and it didnt seem to worry her at all.
Hope you get to see a lot more over the years.Each is more exciting than the last.