Rider Switch - to my knowledge Rider Switch, Rider Swap, Child Swap all referred to the same thing, there aren't (and weren't to my knowledge) different programs.
WDW website this afternoon states this:
Rider switch is a program available to all Guests. With Rider Switch, Guests can wait with member(s) of their party who aren’t riding due to any of the reasons listed below. Once the first Guest returns the waiting Guest can board the attraction without having to wait in the regular line again!
Rider Switch is available for Guests who meet one of the following:
- Does not meet the boarding requirements
- Has a service animal that cannot board the attraction or does not want to use a provided kennel
- Meets boarding requirement and does not want to ride but cannot wait outside queue on their own
Rider Switch is available at most attractions throughout Walt Disney World Resort.
As
@SueM in MN mentions, the word "most" is new; before the
DAS changes Rider Switch was only offered at WDW attractions with a height restriction. WDW does apparently still require a non-rider, though that non-rider may be the disabled individual.
DLR website this afternoon looks to be exactly the same as WDW. It's been a week or so since I checked, but it used to list more options at DLR. Interestingly, the
Accessibility Planning Guide for DLR/DCA still lists the previous rules:
With Rider Switch, supervising Guests (14 years or older) can wait with member(s) of their partywho aren’t riding due to any of the reasons listed below. These supervising Guests still get theirchance to experience the attraction—without waiting in line again. Rider Switch is available at all attractions in Disneyland® Park and Disney California Adventure Park.
Rider Switch is available for a Guest who:
• Does not meet the boarding requirements
• Has a service animal that cannot board the attraction or does not want to use a provided kennel
• Cannot wait the duration of the queue and needs another member of their party to do the waiting for them
• Cannot wait outside queue on their own and chooses not to ride
• Need access to restrooms for frequent or unexpected use
• Elements of the standby queue may trigger anxiety or sense of claustrophobia or similar
• Prefers to sit and wait outside the queue due to mobility concerns and prefers to not use a mobility device
Rider Switch is available at all attractions in Disneyland® Park and Disney California Adventure Park.
So it remains to be seen if changes are coming to WDW, or if DLR is going to be more limited (what the website) indicates or if the edit to the website was in error and it will revert back to match the Accessibility Guide.
However, I believe Rider Switch on both coasts limits "Party 2" to just 2 guests. That may be 1 who waited plus 1 who rode (gets to ride twice) or it may be 2 people who waited.