This summer we're going to Gran Canaria and staying imn Maspalomas. Although we'll be staying in a textile holiday resort, we're planning to take the family to the  nudist beach and famous dunes in Maspalomas. My wife is going to try to be clothes free on that beach too and we're not pressurising the kids either way.
I'm so looking forward to it as it'll be our first nudist holiday as a family. When we went to Barcelona I went to the nudist beach but they stayed on the textile beach. However, after my wife saw the nudist beach she said that she would probably give it a go next time.
Hopefully if they all enjoy it, next year  they'll be happy to stay in a nudist/clothing optional resort.