Ask HN: Company training or best friend's wedding?

So I am at a crossroads between professional development and personal commitment ,and I could use some objective thinking.

One of my best friends is getting married over Labor Day, and I told him I wouldn't miss it, and I will go to it if there is any possibility. Unfortunately the company I work for wants to send me over for training in Switzerland for training for a client. I need to be at training Tuesday morning, and the only way I can make it is to be on a plane Sunday afternoon before the wedding.

Should I go down for the night before and hit the airport before the ceremony or should I say I am unavailable to go to Switzerland?

Is this training you're to attend or lead? It kinda sounds like traiining you're giving, but I'm not sure.

Even so, what I'm hearing is that a plan was made for you that did not include you in the decision-making process; that given a choice, you would have just said "how about a different w'end?" and everything would ahve been copacetic.

It's probably beyond time, but I would suggest talking to your boss, or the scheduler (whoever that may be) and see if you could work something out. You may be surprised.