I tried setting a reminder in the new events tab in the quest log. At the specific time, there was a small notification in chat and a very low ring sound. If thats all the reminder I will get, I am pretty dissapointed. When I play, I often have the ingame music on and I dont read the chat, so I will miss the reminder.
And the reminder is on the clock, not even posible to set a reminder like 5 min. before event start, so you have time to get to the event.
How about a pop up window or text reminding you of the event?