Huhu,
the Halloween event came to the Life Server on Thursday, very late in the ongoing tournament, from which you should actually get the quest encounters and relics to protect the map.
(if you can't get any further city extensions through it.)
At the time, I was in the tournament at the beginning of round 6 and used the entire round for the entire event. I completed the quest line early on Friday and was on the day quests.
Only a few 20-25x 1h, 15-20x 2h and about 10x 5h time boosters went on it. In my opinion, this is a good investment and it has saved me a lot of time and problems.
I struggled a little more on the beta, (chap. 3 city) because although I had enough time boosters from the tower, some combination triggers were running out.
I have 8 libraries for the collecting spells quests, 2 pandas next to the 2 brown bears so I was not limited to the academy and tournament.
9 enchanted magical workshops and factories also all enchanted, the productins Quest are no obstacle either.