Chris I'm sorry to hear this bro.
It sounds like things have really got on top of you.
Congratulations though on being brave enough to come on here and type how you felt, I'm sure you get some comfort from the support offered.
I can only echo the comments that have already been written mate.
You have my number mate...
Life can be so cruel and illnesses like cancer can be especially indiscriminate of gender and age. I guess it reinforces the need to cherish those who are nearest and dearest to us, as you never know what is around the corner.
One things for sure though, if you are a bit down the chances are, so is your Mrs. Make sure she's ok and you both spare some time for each other.
Everyone knows how much you wanted to go to CE2. There will be another time mate.
If I were you I'd think off something which you can all do on that weekend, otherwise you'll be like a bear with a sore head!
Chin up dude, things will pick up I'm sure