Now currently: All 966,963,857,852,700,981,969 and 171 WL side
MANs have ad. I wonder why they never touch on the 13xx series on
858 or 965 to get an ad. Does advertisers picked which service they
want their ad to be on?
They can pick their own svcs, its up to them, thats why even
Spare buses also have ads... 
Anyway, my guess was right, TIB1154R really is the next 963 bus
to get ad...