Only their ideologies differ a little. When Christians pray, they say God, Muslims say Allah. Allah and God are the same. Christians pray in churches, Muslims in mosques, but both pray before God. It's true that we might have some unique traditions, but any two families in the Czech Republic will also differ in their traditions.
Every family has some special rules.
In our family, of course there exist some as well. When outside, the children can speak Czech or English. People here are very kind. People are very helpful to me when I have a problem.