The wedding marks the beginning of life with a new status - "married". The first years of marriage are a period of discovery and adjustments as you learn what it is like to live together and build a new family.
How you relate to your new spouse and assume your new role will establish important foundations for a lifelong marriage. Discuss your expectations, if they have changed, and how you will share household responsibilities.
As it's said, you don't just marry each other but your families of origin, each with its own culture and expectations. Discuss how you will navigate and accommodate the in-laws while forming your own unique family culture.
With all the changes that come with the change in marital status, conflicts will be inevitable. This isn't a bad thing. Keep the lines of communication open and active - you'll find your relationship strengthened as a result of healthy conflict resolution.