Your progress through the Olympus coliseum depends on how far you have travelled in the other worlds ( for example locking never land unlocks the Hercules cup, etc.), I don't think it is a world you can lock; but eventually the different cups become available to you. The first is the Phil cup, the second is the Pegasus cup, the third is the Hercules cup, and the last is the hades cup. Hope this helps!
Olympus colluseum
Olympus Coliseum
Yes. he is a boss in Olympus.
Olympus Coliseum in both games.
You can get Thunder when you beat the Olympus Colisseum once.
Crescendos are found in the Olympus Coliseum.
The Olympus Colosseum
Get Kingdom Hearts 2. That's what I did. Or you can try and beat sephiroth and all those extra things.
Beat the final boss.
after you finish a world you get more
Yes
Complete the Pain and Panic Cup at Olympus Coliseum.