Finally, the day for the meeting already came and as you can see one by one every king and queen was using the teleportation portals to come to the headquarters. One by one those Warriors from the warrior association escort those people toward the meeting room.
Naturally, nobody brought any of them Royal guards or any high officials from their kingdoms as the warrior association only told them to come to the headquarters as they did not want to reveal that important information to those high officials or any other people.
So from everything then only the kings and the queens came to the meeting. But you can say they did not have any kind of safety problem inside the Warrior Association as the headquarters of the Warrior Association would be the safest place in Terraria.
