It depends who you're asking and it depends who you are.<br />
Some people who need to be drunk to make it down the aisle end up making great partners, some people who dive right in only do it because they haven't thought it through.<br />
Marriage is a HUGE commitment, and you should think it through thoroughly before doing it. That includes asking opinions of friends and family and having moments of doubt.
Yes, they should do it many times.
Of course not