How long after reconstruction until I feel normal...

You will probably be able to walk without crutches or brace... Should you be standing in line for hours? mhh... be carefull about that. Ask for a chair in line... do what you need to do and don't be embarrassed. I wouldn't be dancing or getting drunk... that could very dangerous since it's hard to judge sober how much stress you should put on your knee otherwise drunk. Think about this: your graduation is one night... your knee is there for life. Go to the graduation but kepp it light! My recovery time was fast and after 3 weeks I was going on a cruise to Bahamas. walked on the beaches and moved around a lot WITH A BRACE. I know you will be graduating but take it easy... you can re-injure it again easy. That's what I did. Fortunatelly it was just a sprain and I should be ok soon but listen to the doctor, nurses and phiscal therapist... TAKE IT EASY even if you feel good, just repeat it in your head that it needs much more time to heal then what you think! Good luck and congrats!