Thanks for the tip. Yes, SITI/SOTO restrictions still apply as you quite rightly say. I was a little hesitant in thinking to call TG in India as I'm not sure whether you need an address in India because the tickets will be paper tickets. If I can pick up the tickets at the airport that would be fine - even though I prefer to have them in hand as soon as they are booked.

Here's the fare rules

1 - PSGR P1 ADT RULES DISPLAY
FARE COMPONENT 1 ADT DELSYD TG MEE4M PU 1 S
FCL: MEE4M TRF: 8 RULE: 3000 BK: Y
PTC: ADT-ADULT FTC: XEX-REGULAR EXCURSION
SR.SALES RESTRICT

TICKETS MAY NOT BE ISSUED BY PTA. SITI TRANSACTIONS
PERMITTED. EXTENSION OF TICKET VALIDITY IS NOT PERMITTED.
TICKETS MAY ONLY BE SOLD IN INDIA.
NOTE -
SALES RESTRICTION ALSO APPLIES TO ADVERTISING