Sleeping baby

My daughter is 9 weeks my first child we decided to finally take her around the world to meet and greet everyone. Her first road trip about 2 hours away from home. At home she sleeps in pack n play bassinet right near my bed. We traveled with the rock n play...... she is BF only baby..... anyhow the last two nights of the trip she slept for nearly 8 hours straight! 😲 I keep waking up to checking on her and she’s just there passed out.....but when did she decide she was gonna be a big girl 😭 and not need a night feeding no more......we return home tomorrow I’m interested to see if that sleep pattern continues. I just came here to talk about my feeling 🤣🤦🏻‍♀️🤱🏻 I wonder if it’s the rock n play and opposed to being flat on her back at home