Who is Alan, Lon from Reckless and what is their importance?

Alan and Lon appear very briefly, but play significant roles in the narrative. Alan is one of the boys who comes to the party, bringing with him a supply of marijuana. Lon is another student who works off his tuition and fees as a janitorial assistant - in other words, he's not as wealthy as the other boys, and it shows in their treatment of him. It's his keys, as discovered by Brandon, that enable the boys to find their way into Dumbarton for the party.