Not quite sure what you mean by Single rider
But if you mean " To get into the front row of seats "
then there are lines ... But is it worth the Long Wait
If you mean " Going on the ride " as a Single person ( On your own )
Then the answer then Every ride is available & WHY Not
Just join the regular " Q " & keep an eye out for the shortest Number of
people in the " Starting gate " for each row of seats
If there are say 6 seats in a row & say there are going to be 2 Vacant
then Put your hand up & take one of the vacant seats
Why waste time waiting when there are seats going empty.
If the Other 4 people object Thats THEIR Problem