You don't need Hermes IOSes in order to try the alternative .dol loading methods. Considering that there are 3 games on the disc, I suspect that there'll be at least 4 .dol (executable) files on the disc:
main.dol for the main frontend, what is usually loaded by default
mp1.dol for Metroid Prime (just guessing on the name)
mp2.dol for Metroid Prime 2: Echoes (just guessing on the name)
mp3.dol for Metroid Prime 3: Corruption (just guessing on the name)
I'll have my game tomorrow!
main.dol for the main frontend, what is usually loaded by default
mp1.dol for Metroid Prime (just guessing on the name)
mp2.dol for Metroid Prime 2: Echoes (just guessing on the name)
mp3.dol for Metroid Prime 3: Corruption (just guessing on the name)
I'll have my game tomorrow!