Yes, best way is to schedule disability assistance in Advance thru the airlines when purchasing tickets, then they will have assistance waiting/looking for the individual every step of the way and when on the plane.
That I'm not sure, but you can probably ask the t ticketing counter.
No worries, it's international Airport, they have it covered.
Airline staff will be able to help you at the check-in counters. Alternatively, you can ask for security/gate pass too.
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