Whoops, our bad! That is indeed something that was established a while back in the game (before a couple of us current mods played here, even), but it hasn't been used often or consistently enough that it made its way onto the info pages. This is the kind of thing that happens when your game is old enough to be a fifth grader, unfortunately. But we talked together and what we came to is the general rule of thumb being that things will vanish within a day, but that some properties will fade much more quickly, like fairy gold. It wouldn't be effective to eat food out of the enclosure, and fertilizer taken out wouldn't be useful in this endeavour, so please do have them use supplies from the greenhouse.

On the same note, while we're okay with the plot on a mod level, the greenhouse is deliberately described as very large to encourage many subprojects there, and characters do use the bowling alley. We can grant permission OOCly, but it may seem like a strange choice to the other passengers and likely to provoke pushback, which you'd need to hash out ICly.