I can't remember which one, but thought I had gotten 3x for a OTA travel agency booking once on my Prestige.

I agree that term should be clarified. I could understand if it was something like a partner one like Priceline or something, but it seems odd that is all encompassing - traditional and OTA. Especially since those will be likely big dollar expenses and it would suck to have them code wrong.

Airfares in any case may always look like air booking qualifying for the higher rate, whether booked directly or though an intermediary.