Yes of course - we'd love to have you!
Just click on the orange Groups tab at the top of the page, then pick Novel Motivation Group (bottom of the lh column), then you'll see a sentence to click on at the top of the Novel Motivation Group page - it says 'Click if you want to join this group' or something.
You just do so and then it does ask for reasons, but I don't think they take much notice of that so just type something brief along the lines of what you've said here. You should be joined very soon - usually takes less than half an hour.
Congrats on the forthcoming wedding - that's great!
Deb