The Explorer's Celebration, a limited-time event, grants you additional rewards for the following in-game activities:

• Double drops from harvest nodes (Fishing excluded)
• Double EXP gains from every source (100% experience boost)
  • This stacks with other XP boosts such as scrolls or group multipliers
• Double gold earned from monster kills, quest rewards, and similar sources

These bonuses are available to all players in any zone in Tamriel. You can find a list of all zones here. It might be a good idea to combine the event with a set you would like to obtain in a certain zone or achievements you would like to get. Especially if they are connected to gathering resources or killing a specific amount of monsters. This way you will also receive a lot more EXP than without a double EXP event.

Note that the Explorer’s Celebration doesn’t grant Event Tickets and doesn’t have its own unique quests, Achievements, or collectibles associated with it. Additionally, the Impresario isn’t available during this limited period. It can happen though that it happens after a special event, and is combined with additional rewards that you can claim from the Crown Store, for example.

The event runs for a full week only, so don’t miss out on your chance to get extra experience, gold, and resource node drops - Good Luck!