Pandaren mounts are available on their corresponding race. Create a new character and you can get them without the standing.
Cataclysm
2 / 3
Hellscream's ReachRevered · 18,050 / 21,000
0 / 1
RamkahenNo standing yet
2 / 2
Wrath of the Lich King
0 / 55 to get now
The Sons of HodirNo standing yet
0 / 2
The SunreaversNo standing yet
0 / 2
The Wyrmrest AccordNo standing yet
0 / 1
The Burning Crusade
15 / 161 to get now
Cenarion ExpeditionNo standing yet
0 / 1
NetherwingNeutral · 0 / 3,000
6 / 6
Sha'tari SkyguardHonored · 11,670 / 12,000
5 / 5
The Mag'harHonored · 3,429 / 12,000
4 / 4
Horde
47 / 535 to get now
Bilgewater CartelHonored · 183 / 12,000
0 / 1
Darkspear TrollsNo standing yet
7 / 8
OrgrimmarNo standing yet
17 / 18
Silvermoon CityNo standing yet
8 / 9
Thunder BluffNo standing yet
7 / 8
UndercityNo standing yet
8 / 9
Darkspear Trolls and Orgrimmar and Silvermoon City and Thunder Bluff and Undercity mounts are available on their corresponding race. Create a new character and you can get them without the standing.
Standings come from the last update, about 3 hours ago. Some mounts may be missing or incorrect still. Please report any issues on the contact page.