Currently, the objective will provide a hint to the location of the vendor and that vendor will be marked with a yellow exclamation point. Some vendor ingredients will only be available when you’re on that particular objective and typically cost 10 silver or less, so you won’t break the bank buying these ingredients. Once your reagent is purchased you’ll then toss the ingredient into the Community Feast pot to complete your current objective.
These new sets of tasks are relatively easy and straight forward, but do ask players to move around a bit more and interact with various vendors in Iskaara. It’s not as easy as standing near the pot and spamming your abilities, so perhaps this was instituted as an anti-afk measure. While that remains unclear, it does mix up the gameplay of the Community Feast event which is a welcome change when farming Iskaara Tuskarr reputation every 1.5hrs with this event.