You will generally be received well by Dutch people, especially since you have family ties and speak English fluently. Dutch society is known for being open and direct, but also values effort to integrate. Your B2 Dutch is a strong foundation, and with some cultural adjustment, you should feel welcomed.
Dutch people appreciate honesty and directness. They may come across as blunt, but it is not meant to be rude. If you show genuine interest in learning the language and participating in Dutch customs, you will be met with respect. Your family connections give you a natural entry point, but don't rely solely on them. Making your own friends and engaging in local activities will help you feel more at home.
One tradeoff is that Dutch social circles can be tight-knit. It might take time to break into established groups. However, many Dutch people are welcoming to newcomers who make an effort. Joining clubs, sports teams, or volunteer groups is a great way to meet people. Also, be prepared for direct feedback; it's a sign of respect, not criticism.
To integrate smoothly, start by improving your Dutch. Even though many Dutch speak English, using Dutch in daily interactions shows respect and helps you connect. Consider taking a language course or practicing with family. Learn about Dutch customs, such as cycling, punctuality, and bringing a small gift when invited to someone's home. Be proactive in social situations; don't wait for invitations. Ask colleagues or classmates for coffee or to join activities.
Your age is an advantage. At 18, you can enroll in a study program or join youth groups where making friends is easier. Be patient with yourself; cultural adjustment takes time. If you ever feel unwelcome, it's likely not personal but rather a matter of social dynamics. Stay open, ask questions, and show curiosity about Dutch life.
In summary, you will be received well if you approach the move with an open mind and a willingness to adapt. Your family and English skills are assets, but your success in feeling accepted will largely depend on your own efforts to engage with Dutch culture and language. Dutch Fluency will come with practice, but even now, your B2 level is a great start.