Mom Code Help!!!

This is my first baby and none of my friends have kids so I've been quite lonely when it comes to having a mom to relate to. She wants to get together for a play date. What do you do on a play date? My LO is 6 months. Her girls are 18 weeks and 20 months. How long should I wait to text her? What type of play date should I offer for our first meet up? Thanks for your help! 😊