After an 18-month hiatus, concerts, festivals, and tours are expected to return to their pre-pandemic glory. As vaccination rates rise and governments relax their pandemic regulations, the recovery of the event ecosystem is happening faster than expected. Events professionals see the number of events and event attendance reaching and potentially surpassing pre-pandemic levels in 2019. But that recovery is contingent on a number of factors, including how effective the vaccine program is, the nature of the events themselves, and where they are located. What exactly that recovery will look like depends on a variety of factors. The question is —…