Nah there is still a bit of time left for the event, until 8 pm local time on the 31st. Maybe not much time for some event catches, but definitely time to evolve a Cubone to Alolan Marowak if you want to! It's good that you're on that Rocket grind to level up! Did you get a Shadow Cubone from Cliff to maybe evolve into a Shadow Alolan Marowak?