The venue of today's celebration was a hall detached from the main building of the Grand Palace.
It was a grand hall with glass roofs in the middle that made it bright and sunny.
It also had wide glass windows for fresh air.
Magic was used to maintain a comfortable temperature inside so it wouldn't be too hot or cold.
They were inside the palace walls which had never been breached by outside attacks. Thus, everyone was assured this place was safe.
They did not expect monsters to pop up inside the walls.
Monsters had never been sighted in the palace itself.
The monster sightings in Medeus lately were on the outskirts so they did not expect it would happen in the palace grounds.
Those who had not seen monsters before thought the sound they heard was merely from huge beasts that were probably captured by knights or hunters and had escaped.
It still sent them fear though since they barely encountered beasts with such loud roars.