Some more info regarding drops/prizes:
G12 prizes (Sky Box, CP Charms, Premium leveling consumables) drop from IOS/Reborn bosses during the event. The drops (and difficulty) per boss increase in each phase.
I have created an additional prize macro for the lowbies at the end of the event which will include teleport scrolls, pet feed, mount feed, poisons, various useful low level items and consumables, as well as a few power capes and costumes.
Additionally, minibosses and bosses of various levels spawn within the city throughout the event, grouped by level range. With the 10x XP/Pet XP and 5x Droprate active during the event, this was designed to give lower level players something to do during the event.