Ordinarily, rider switch functions basically as an extra FP+ for party #2, and party #2 uses the fastpass queue. But there's no fastpass line at Smugglers Run, or at least the fastpass queue is not being used or staffed there. So how does party #2 "skip" the line at Smugglers Run? Do they have to wait in the regular queue with party #1? Do they get to go in the fastpass queue that exists but is unused?