Been married for 22 years. You will argue and you will disagree on things, but do not let that spoil the relationship. I bet you argue and disagree with your other friends!
Love and respect is what it is all about. Don't forget to make time for yourself and not do everything as a couple.
Also never forget your friends, they were probably there before your other half.
New day, new challenge enjoy it together. Have a great life together!