Join Date: Aug 2015
Location: Wellington/Jakarta
Programs: Accor+ Platinum, Honors Diamond, SPG/MR Gold, IHG, KrisFlyer, Airpoints, Qantas FF, Enrich, SkyMiles
Posts: 480
There won't be any problem. I have always made by Garuda bookings with only my first and last names without my middle name. Whereas my Indonesian National ID card (which I use for domestic flights) shows all my first, middle and last names. Never a word from check-in agents.
Also true for domestic flights with any other airlines.