to get reputation , there's only way , that's a pandaren at Orgrimmar or Stormwind gate
they has 2 quests
but be careful , you must take all quests and never do decline
i got first quest and completed that , then server got dc
now i cant take second quest to get exalted
now im revered , and i ask a gm to help me , and that gm says we cant help you , you must wait till server fix tabard
i got all achievements for Pandaren ambassador except alliance (Tushui) horde (Houjin) :(