As you're preparing to get married also prepare to stay married. Maintaining a marital relationship every year is not a small thing.
It requires a wholehearted commitment to doing it. Imagine living with one person for your entire life. Imagine having sex with one person for the rest of your life. Imagine waking up to one person by your side every morning. Will you be able to do it? Can you stay with one person year in and year out without getting tired? Think about it.
The reason why you see many marriages breaking up is that many couples are only prepared to get married, they didn't prepare to stay married. Getting married is easy but staying married that's where the work is. If you have the money you can pull off the best wedding ever but staying married requires something more than money.
Staying happily married every year requires a wholehearted commitment, effort, sacrifice, tolerance, understanding, knowledge, trust, love, spicing up your marriage, being creative and innovative, etc. It is not a small matter. Therefore, prepare to get married. Also, prepare to stay married.