Looking for people who have been to Oktoberfest in the past. How much time did you spend at the fest before it was too much/got bored? I've been to Munich a few times before, but some of my college friends are going and I might join them for a few days before moving on to other parts of Germany. I suspect the tents are a like a "Vegas" thing, ie after 2-3 days, all the lights and sound kind of get to you and you've had enough (at least for me).
There is more to Oktoberfest than the beer tents.
Adjacent to the tents is an area with rides and food, so you could spend time walking around there, too.
We visited the big fest three times, since we lived in Augsburg, about 50 miles west of Munich.
We always did a full day.
Loved going one year for the beginning of the Oktoberfest and watching the parade of all the beer wagons, with people dressed up in local attire.
When we did the Oktoberfest, we usually went earlier than most, arriving no later than 11am so we had lunch (get roasted chicken). The crowds are not as heavy as in the late afternoon and evening. It does get more festive with all the singing later in the day, so stay for that.
We never made reservations, but that was over 35 years ago. One thing. that I learned was drink your beer slowly. It is stronger than American beer. I suggest for the average person, don't go over four liters of beer.
Do not drink beer and try to do the rides, or your beer will revolt.