I'm trying to figure out how this odd/even grouping thing improves efficiency.
Basically for Everest to run at full capacity each train needs 14 "pairs" of people sitting next to each other (28 people total).
Lets make this worst case scenario for standby (and assuming there is no one in SR line)
The first person is solo and takes half of row 1
The next group is a group of 2, so they take rows 2
The next group is a group of 3, so they take 3 and half of 4 (they don't want to split up and take half of row 1 and row 3 with strangers between)
The next group is 2 and take 5
The next group is 3 and take 6 and half of 7
The next group is 2 and takes 8
The next group is 3 and takes 9 and half of 10
The next group is 2 and takes 11
Then another group of 3 takes 12 and half of 13
Then the final group is a group of 2 and takes row 14
The train leaves with 5 empty seats
FRONT
1. XO
2. XX
3. XX
4. XO
5. XX
6. XX
7. X0
8. XX
9. XX
10.X0
11.XX
12.XX
13.XO
14.XX
Now lets assume they did the even/odd split.
The solo person still gets half of row 1
Now they put a group of 3 with the solo person to fill out row 1 and row 2
Then group of 2 in row 3
Group of 3 in row 4 and half of 5
Another group of 3 in half of 5 and 6... and so of and so on. Now those extra 5 seats will hopefully be filled by a group of 3 and a group of 2... meaning that's 5 less people in the standby line moving forward.
Basically turning each 2 groups of 3 into a group of 6... they can fill every seat with still meeting expectations of even parties sitting together and odd parties splitting up as little as possible.