I know I'm a bit early but i've got the bumph....
Event starts at 4am server time which I think it's 1am SG/HK on 21st June SUNDAY morning (i.e. very late saturday night), it's a 2 week event so you're looking at ~ 30 tokens a day average, you get 5 per honour and 10 per desecration
Check on your armory page to see where you've danced last year as you get credit for them, however you'll probably be doing a bit of dancing to get the tokens for the full midsummer set (400!)
Fires of Azeroth - honour horde flames listed below
Desecration of the Alliance - Desecrate alliance flames listed below
King of the Fire Festival - Steal a fire from each of the alliance capital cities.
Here's my own recommended path...
Eversong Woods (honour)
Ghostlands (honour)
Trisfal Glades (honour)
Western Plaguelands (desecrate)
Silverpine Forest (honour)
Hillsbrad Foothills (honour & desecrate)
The Hinterlands (honour & desecrate)
Arathi Highlands (honour & desecrate) - done honour only (note to self)
Wetlands (desecrate)
Dun Morogh (desecrate)
Badlands - done. (note to self)
Burning Steppes (honour & desecrate)
Redrigde Mountains (desecrate)
Loch Modan (desecrate)
IRONFORGE - STEAL FLAME
Swamp of Sorrows (honour) - done. (note to self)
Blasted Lands (desecrate)
Elwynn Forest (desecrate)
STORMWIND - STEAL FLAME
Duskwood (desecrate)
Westfall (desecrate)
Stranglethorn Vale -> Boat to ratchet (honour & desecrate) - done both (note to self)
Dustwallow Marsh (honour & desecrate)
The Barrens (honour)
Stonetalon Mountains (honour)
Ashenvale (honour & desecrate)
Durotar (honour)
Winterspring (honour & desecrate)
Fly to Felwood then
Darkshore (desecrate)
Bloodymyst isle (desecrate)
EXODAR - STEAL FLAME
Azuremyst isle (desecrate)
Teldrassil (desecrate)
DARNASSUS - STEAL FLAME
ALSO PICK UP QUEST FROM DAWNWATCHER SHAEDLASS 56,25 in darnassus
-> hearth to dal then back to TB
Mulgore (honour)
Desolace (honour & desecrate)
Ferelas (honour & desecrate)
Thousand Needles (honour)
Tanaris (honour & desecrate)
Silithus (honour & desecrate)
Nagrand (honour & desecrate)
Zangarmarsh (honour & desecrate)
Blade's Edge Mountains (honour & desecrate)
Netherstorm (honour & desecrate)
Hellfire Peninsula (honour & desecrate)
Terokkar Forest (honour & desecrate)
Shadowmoon Valley (honour & desecrate)
Burning Hot Pole Dance - you need to dance for 60 seconds at a pole while wearing the full set
http://www.wowhead.com/?itemset=785 The full set costs 400 tokens... if you have another 350 you can get the pet... and for another 350 you can get the brazier
Ice the Frost Lord - Slay Ahune... he'll be in one of the L80 Dungeons... don't know which yet
Torch Juggler - Spam the torch on your action bar in Dalaran... 40 torches in 15s... you need a good ping and FPS, do it somewhere quiet
Kazza