Rocky later realizes that Grace (and Simons) inhospitable atmosphere is actually a very effective way to protect them. No Eridian can have access to the humans without clearance through the biodomes lead director, Adrian.
That granted access comes with a 5 day training seminar. It covers how to put on the xeno suits correctly, to basic human etiquette when interacting with them, to an intense break down of ALL the ways an eridian can die inside that atmosphere and environment. At the end there is paperwork the Eridian must sign to have written proof that they learned all this and agreed.
Rocky himself had taught a few of those seminars, but only if he knows the eridian taking it. He either is the best expert there is, encouraging family or friends that they are in safe claws and the biomes goal is to protect them just as much as it is to protect the humans. OR. Heās the judge, jury, and executioner to whatever shmoozing politician or spoiled nepo hatchling who thinks that the biome is some kind of expensive funny zoo exhibit that they can use for their own means.
The Only eridians that get to have Grace himself as their biodome instructor are the children he teaches and their family chaperones. Tho the kids specifically are put into protective hamsterballs instead of full xeno suites.
Simon did lead the seminar exactly once. He was simultaneously very effective at explaining how dangerous this choice was and the importance of the protective gear, but also way to casual about some of the dangers and Extremely distractable to get off topic.
