So up to when she was 12-ish she was coming to us one weeknight every week and every other weekend Fri- Mon, so 5 nights out of every fortnight, plus we had just over 50% of the holidays.
Then she decided she didn't like having to get up earlier to get the bus to school on "our" weeknights and also most of her friends lived closer to her Mum's, so it changed to just Friday and Saturday every other week and then there was more weekends when she was going on camps, or to sleepovers etc. and we realised that it was working out she was mostly just coming in school holidays.
At this point, we were really struggling moneywise because the area we were living in was so expensive, we had no family support (DH doesn't have family and mine live up North) and DH's mental health was rapidly declining due to workplace bullying, but he couldn't change jobs as we were only just making ends meet as it was. That's why we decided to move to be near my family and now she comes for holidays. We wanted my daughter to have the same things SD has always had- annual holidays, a garden, days out, birthday parties- and that just wasn't feasible in the situation we were in. And we wanted our own home, not an unstable rental.
Standards are different at her Mums, not necessarily lower but she values different things. We expect more in terms of manners and food, and BM is more into the Disney holidays and buying lots of stuff and material goods. She's stricter in terms of allowing SD freedom and I think she treats her more like a much younger child. I think it's maybe partly cultural too- where we live now I'm happy to let my 6 yo go out to play and just tell her to let me know if she's going in someone's house so I can find her. Down there, people won't even leave a 10 year old alone in the house for an hour.
I think we all care about education but BM left school at 16 and we both have post-grad qualifications so I think we're maybe more aware of what actually makes a difference. We were more able to help her with homework and explain things to her.