Families can be tricky to navigate, particularly when cultures clash. The really important thing here, as Efjay says, is to have DF on your side, agree (just the two of you!) on what you want, and then stick with that.

I can't tell you what to decide, that's up to you and your DF (as the parents), but I can tell you that this will probably set a precedent. If you allow your DF's family to push you into a decision you're not happy with, they may expect to be able to do that about lots of decisions. Not to mention that it could cause problems between you and DF if you feel he's not putting you before his family. All I can urge is for you and your DF to be on the same page here, and stand together.

All the best. xo