A bit of a surprise that San Diego and Portland are in the same weekend, but maybe that split up the west coast enough that both became "manageable". Here in PDX, we capped at 60, and all are prepaid (with a bunch on the wait list).
Can't imagine if we'd been scheduled on different weekends...yikes...
Portland and San Diego are 1,080 miles apart. Portland is ~950 miles from Los Angeles while San Diego is ~120 miles from Los Angeles. I really don't think there are a lot of people who would be attending both even if they were on different weekends.