My husband and I attended a friend's wedding overseas when our child was just over a year. We left her here with her grandparents while we were gone for two weeks. It was a great time to reconnect after the stresses of being a FTP and neither of us have any regrets about it. We both said it would have been nearly impossible and super stressful to bring her with us, especially to a country we weren't familiar with. 

Is there a compromise that you could attend the wedding but leave the baby back home with a trusted relative? Being a FTP is so stressful, and you could use it as a way to reconnect with your partner.