5s very rarely run early!
Throughtout the day, The Majority of 5s arrive/layover/depart before the next 11 is scheduled to Arrive and do the same thing. So drivers can get away without having to move to the spare stand to have there layover.
Conflicting movements only happen when the one of them is running late however, So there's a chance the 5/11 will have to use the layover bay if the other is on stand running late.
The 5 now uses stand C the sameone as the 88/88A
