According to the Catholic Church, will people be able to have private conversations with God at any time in Heaven?

Every now and then, I say to myself, "I'll have to ask God about this when I get to Heaven." My Question: According to the Catholic Church, will it be possible to ask such questions once we're in Heaven? Specifically, - Did Jesus (or anyone in the Bible) ever talk about the nature of our interactions with God in Heaven? - Can humans have a private conversation with God in Heaven whenever they want? - Or do they need to schedule an appointment and wait? - Or do we talk to God through prayer, much like we do on Earth? I'm especially interested in Biblical support for any answer.