New rule seems to be, one additional rider with the person staying back.
However, depending on CM they don't seem to care if it's 1-3 additional
Especially if the 1-3 riders are children.
Here is the official wording on the
Disneyland site (mention of additional guests).
To Use Rider Switch:
1. First check with a Cast Member to see if Rider Switch is offered at the attraction you’d like to experience.
2. Upon arriving at the selected attraction, approach the greeting Cast Member with your entire group. Members will be divided into 2 parties—“Party 1” includes those riding the attraction first, while “Party 2” consists of non-riders and their supervising Guests.
3. The supervising Guests of Party 2—which can include a maximum of 3 people— will have their admission media/tickets scanned and must wait in the designated area—usually outside the attraction—while Party 1 waits in line to experience the attraction.
4. After Party 1 experiences the attraction, they’ll assume supervision of the non-riding Guests.
5. The supervising Guests of Party 2 should then return to the appropriate attraction entrance (e.g., attraction exit) to have their admission media/tickets re-scanned by a Cast Member for the Rider Switch entitlement. At this point, Party 2 may enter the appropriate attraction return line and board without waiting in the regular queue.
