I've only just seen this post... It's my graduation ceremony mid November so LO will be about 4 weeks old, so I'm bringing him with me! I'll have OH, my mum, dad and brother there to look after him. I'm planning to BF but will pump into some bottles to take with me so they can feed him etc...
But if I couldn't take him I'd leave him with a relative, as long as it's someone trustworthy I can't see the problem for a few hours...
You don't want to miss your graduation do you? I'd massively regret it if I didn't go to mine, and I wouldn't want to reschedule my ceremony because I want to be there with all my friends!
As long as you feel okay leaving LO with your MIL then that's fine! Might be nice to have a little break. I'm looking forward to mine so I can feel like a normal 21 year old (ex) student for a couple of hours!
xx