Initially, I wanted the player to be able to enter the tent and find the chest with potions actually inside of it. But that seemed like it would be too much work so it didn't make it to the initial release. I might add the interior at some point and move the potion chest inside, it's just not very high on the priority list at the moment.
In general, Goblin NPCs were supposed to represent "populations" rather than individuals. So basically, there is more than one warden and some work night shifts. However, some players expressed interest in giving specific NPCs actual names as well, and with the fact that the individual sprites can be dressed up according to the players will has made me drift away from the populations idea. Incidentally, Goblin Madam at the Brothel is also active 100% of the time. Maybe in the future, if I end up giving them individual names, they might have a different one for each time of the day!