For those using the Focusless/Targetless Leader System and who struggled to get it to work here's how I got it done. Your mileage may vary...

Change your follow macro to:
  • /focus <insert your ctrl/shift/alt sequence for each char>
  • /follow focus
  • /clearfocus
Follow will now work regardless of whether or not you are in a vehicle.

Next if you don't already have one, make a new macro/key bind to assist current leader (don't forget to make a new keymap if you aren't using the same key for both master and slaves)
  • /assist <insert your ctrl/shift/alt sequence for each char>
Now, my assumption is that you already have possession bars setup on all your alts, if not you'll need to do that to use the vehicles/mounts abilities.

In my setup I use jamba and keyclone and a strict do-not-pass list, so I use Ctrl-1, Ctrl-2, etc to invoke the vehicle/mount capabilities and bypass the existing keymaps. You will need to adjust for your setup.

When I do Aces High!:
  1. Everyone gets quest
  2. Everyone gets mount (one at a time, I noticed that if I did them at the same time 2 chars don't get a mount)
  3. Everyone jumps into the air
  4. Hit follow macro key
  5. Target first drake
  6. Hit Assist macro key
  7. Ctrl-1 x 5
  8. Ctrl-2 x 1
  9. Repeat step 7 & 8 once
  10. Dead drake
  11. Repeat for 4 more drakes
I have a 5 man team, if you have fewer you may need to throw in a Ctrl-5 (shield) if the drake lives long enough for its special attack.

If you are unfamiliar with the Focusless/Targetless Leader System you can find info on these forums and on the wiki .