In-laws should have 0% say in how a married couple lives, spends, argues, loves or plans their future. It's their marriage, not yours.
A marriage has two stakeholders: the husband and wife. Everyone else is an outsider, including the in-laws.
If you carry one thing with you today, let it be this,
You are amazing,
You are brave,
You are kind,
You are wonderful,
You are loved,
You are worthy, &
You are doing the best you possibly can.