What a horror, but you better not worry ahead of time. Perhaps because of covid, they could not support work in the office and switched to remote work from the home of each of the co-workers. It may well be the case, especially now, when the number of patients due to the vaccine is growing. I also bought tickets with my friends for that October on vacation, but the agency temporarily switched to remote work. We have even already made a plan of our actions in the rest, referring to girl's day out ideas, so that our every day will be exciting and fun. So don't worry, contact the person who sold you tickets and I'm sure that he will explain everything to you