As a basic rule to live by: if you're going to propose to your lover, you probably shouldn't do it at someone else's wedding. Even if love is in the air and the whole family is there and you're drinking champagne on someone else's dime. With a few exceptions (explicit permission and support of the bride & groom), t's just not the time. Even in 2020 when the world is in chaos and the wedding is taking place over Zoom. Yes, even then.
My [27M] older sister [30F] and her fiancé [31M] were planning for over a year for their wedding to be this month. Obviously, they can’t have the wedding as planned, but they still would like to get married, so they decided on a “Zoom” wedding where all of the family/friends would just call in to watch the officiant, my sister, and her fiancé.
My sister didn’t want to be in charge of hosting the Zoom call because she thought it would stress her out, so she asked me to and I gladly accepted.