The name of the game is COMPROMISE! If you can't do that then you can't do marriage unless someone is totally submissive. That's not a good relationship.

Another thing is that you should share your interests but allow time for individual interests as well. I've known some people that wanted to never be apart but there's something wrong with that. One and one might figuratively make one but two objects can't occupy the same space at the same time. You'll need a break sooner or later and as soon as you both realize it the less painful it will be.

Not everything is going to be hunky dory. Meals will be missed or burned. Trains will be late. Promises will be proken whether or not you intend to. As long as it isn't the BIG PROMISE (for heavens sake be true to each other) you should be able to work through it, and whether you believe it or not it is work because you must keep working on the marriage. Don't get complacent!

And lastly, it helps to live a comfortable distance away from the relatives. One so that neither one of you feels like they can just go home to mother. Two, so that the relatives don't interfere with your marriage. You made a commitment to each other and you should face the world on your own, but together.

16 rollercoaster years and still enjoying the ride.

Congratulations, I wish you well!