As of writing this, the event is officially over. At ArneCon 4, I participated in some fun events, bought some games, met some people, and had a great time. The people there were all super cool and I am very glad I ended up going. I will write a more detailed recollection when I am not tired as hell from the convention, but here is what I did roughly:
I bought (or was given):
Empire of the Petal Throne RPG in its Entirety
Barons of Blackmoor
Barrowmail
I played:
Holmes Basic Set D&D
Empire of the Petal Throne
OD&D
Braunstein I
Braunstein IV (Banania)
Chainmail
Various games on the PLATO system, including Camelot (hard but fun; like Wizardry) and Oubliette.
I met:
Griffith Morgan (Fellowship of the Thing; Blackmoor Secrets)
Chris Graves (see above)
Greg Svenson (aka the Great Svenni)
Matt Tapp (Barrowmail)
David Megarry (Dungeon!)
David Wesley (Braunstein)
Alexander Macris (ACKS; Autarch Games)
Paul Stormberg (Collector's Trove, among other things)
About 50 other great people who's names you won't recognize and I maybe won't remember