Team Pacquiao -- No Free Tix for Mickey Rourke ... Want 'Em? Buy 'Em.

Manny Pacquiao's trainer says he's HAPPY to buy tickets to the big fight for some of his favorite V.I.P. celebs -- unfortunately for Mickey Rourke, he didn't make the cut.

Now, Bob Arum says he doesn't wanna disrespect the famous actor ... but says he ain't gettin' a free ride just because Mickey works out at the same gym where Manny trains.

So, who DOES get the hookup?

We already told you Bob promised a ticket to Ronda Rousey ... but now, Arum says there are a few other people he'll take care of ... some people with a VERY famous father.

Check out the clip.