Times Cryptic 978

[carlina]

33a Auditors’ agents outside left invite for exhibition site (5, 5) I have E?R?S / ?O?R?

51d Girl’s choice of starters from trolley have approval (5) I have T?O?A If the answer is Thora can someone explain the wordplay.

If choice(=OR) and then it’s T(rolley) H(ave) A(pproval), what word is the anagram indicator?

Any help greatly appreciated

[Lie-in King]

33a Earls Court - 'ears' (auditors' 'agents', outside) l(eft) + 'court' (invite)
51d Thora - 'T, H or A' - choice of starters from T(rolley) H(ave) (or) A(pproval)

[shooty]

thora
choice = or + first letters of trolley have approval

[Muffinbear]

Earls Court

Thora TH or A - its not an anagram

[carlina]

Hello Lie-in King, shooty and Muffinbear

Many thanks