The classic movie "Wedding Crashers" (2005 release date) was made about getting laid at wedding receptions. I made a thread about that movie on this forum in 2021. People have been thinking about getting laid at wedding receptions for a long time.
The 2005 movie "Wedding Crashers" could never happen at weddings in from 2010-present. In fact, I would say that it was far fetched and detached from reality even in 2005. The main reason that "Wedding Crashers" could never happen 2010-present is that people get married much later in life now...
www.sosuave.net
You would be extremely unlikely to get laid.
Problem #1 is the biggest problem that prevents most people from getting laid at weddings.
Some people do manage to create romance at wedding receptions. I have survey data from 2018 about wedding reception romance. It's very surface level. Anyone who has ever been invited to a wedding would see right through a lot of this data when reading the article.
All the juicy details on those wedding hookups. Your single friends are going to want to read this.
www.weddingwire.com
Wedding receptions can work for same night sex when the marrying couple is on the younger side (probably under 25-26 max) and/or has a social circle with a fair number of unattached people. That's not applicable for a lot of weddings these days.
Almost all the weddings I've been invited to occurred from 2010-2019, and there was a couple of laggard weddings from 2020-2023 that I was aware of. In this thread, I mentioned a 2017 wedding I was invited to with 0 unattached people. In the same social circle, there was a 2023 laggard wedding that I wasn't invited to and wasn't notified until the last minute. The 2023 laggard wedding was likely to have had no unattached people at it either.
With some social skill, a man can figure it what his odds of getting laid at a wedding reception are before the RSVP card is due and adjust his expectations accordingly. I was always able to figure that out.