Short answer
Differences in customs, food, language, family roles and communication can create challenges if expectations are not discussed.
Islamic Guidance
What Islam teaches
Islamic principles should take priority over cultural practices that contradict Islam.
Practical Guidance
What you can consider
Identify important cultural practices before marriage and distinguish between permissible customs and practices that conflict with Islamic principles.
Sources
Qur'an 49:13; Qur'an 7:199.