It looks like...
Event Name is +0,
Event Date is +1,
Event Time is +2,
SimAddress is +3, (This is the hypergrid address.)
Location should be +4 (This is upper, lower, or middle.)
Snapshot URL is +5,
Website is +6,
Grid Name is +7,
Looks like I hadn't changed SimLocation in the script because I wasn't using that data... so very sloppy on my part, should either remove the variable or fix it.
The other problem could be that I wasn't updating the spreadsheet. I've added a bunch of upcoming events, and it should be working correctly now.