In scene 2, Caliban is still viewed as a "worker beast," in spite of being uncovered as a human. Stephano and Trinculo, however ostensibly less savvy than Caliban, still treat him like he is not really human in view of his local status and skin shading; and the way that Caliban endures this treatment and verbally abusing demonstrates that he acknowledges this mediocrity and Stephano's shaky expert also. Caliban demonstrates that he is more insightful than Stephano and Trinculo is that he understands that opportunity from Prospero is more critical than apparel or wine.
The messege i get from it is dont judge a book by its cover. even if it seems scary.
It is correctly placed. The dependent clause in this sentence is necessary to identify which families went, therefore you need no commas.
I hope this helps!