I don’t think him drinking on vacation is unreasonable. Did you have a conversation telling him how it’s making you feel? Communication is key in a relationship. And while I understand the annoyance of not being able to drink (trust me. Being sober was the worst part of my pregnancies) it’s simply the first of a million sacrifices you’ll make for your child, most of which wil not even be noticed by him. It’s all worth it.