I don't know why there would be an inbetween place? I imagine there might be a tunnel/crossing place (river, flowery meadow, etc.) to get from one "state" to another but I can't see why there would be a waiting room to get wherever you're going. I don't believe there's "one" experience for everyone after death anymore than there's only one when we're living. My Life/experience is not like another's now so why would it be later. I don't believe in "just" heaven/hell; that, to me, would be like only believing in New York City or Southern California (I'll leave it to you to decide which is "heaven" and which, "hell" :-)