I am getting merried next month - we have a wedding website via "with joy", which had a URL a bit too long to fit on our wedding invites, so I set up a redirect of "wedding.surname.tld" - the amount of people who messaged us saying the website didn't work, and it turns out they were putting "www." beforehand was staggering (until I added that as a redirect too).
From my experience, yes.
I am getting merried next month - we have a wedding website via "with joy", which had a URL a bit too long to fit on our wedding invites, so I set up a redirect of "wedding.surname.tld" - the amount of people who messaged us saying the website didn't work, and it turns out they were putting "www." beforehand was staggering (until I added that as a redirect too).