In the Czech Republic, Covid numbers are far higher than they were this time last year, and yet the first Christmas markets are due to open this week, with the Náměstí Míru market opening on Nov. 20 and the largest, Old Town Square market set to open on Saturday, Nov. 27. With a steep increase in Covid cases leading the government to introduce an effective lockdown for the unvaccinated and a ban on large-scale events, how can markets ensure their events are safe?