Hello - we have our daughter's wedding coming at the end of August. We have rented a large ballroom for the wedding and reception. I'm concerned about having a group of people in the same area for 5 + hours. One thing we have going for us is the space is very large and we estimate the number of guests to be at about 1/3 the full capacity, also the ceilings are very high. I'm wondering what types of things I should ask the venue about the air filtration, if they have hepa filters etc. to make the environment more safe?