Scared for my partners parents to meet my own

I'm scared for my partners parents to meet my own. This is because her parents seem rather judgemental. For example: my partner had mentioned about my grandparents going on a couple of cruises in the past and they made the quick assumption that they must have got their money from somewhere other than working hard for it! Same with stories about my parents.

They think that because we had been on a few small holidays as kids, that my parents must be loaded. Yet in reality the only difference is that both of my parents worked, where as her mother was a stay at home mum. Also, they forget that they lived with certain things I would call a luxury. It just depends on what you want in life.

They make quick judgements on people's financial situation based on snippets of information. It stresses me to how my parents and hers would interact with eachother because I think my own parents would struggle to see that it's just how they are and would be offended/find it very rude. Especially as my dad can go on about things sometimes which makes it sound like he's bragging. 

It worries me how the situation would go