According to Nila they still had a few days until they reached the floating city for the big meeting about the hassles that the shipments going to the Northern Continent were facing. The Wave Riders were highly annoyed after a series of attacks on them, and the leadership decided that the Giants had forgotten the value of showing respect for the Wave Riders. That was an oversight that that simply couldn't tolerate, the safe and secure transport of the goods they produced and pilfered required that people remember who they were dealing with. If one started to openly disrespect them without retaliation, others would as well.