I would like to comment about the family bed issue. I looked for a topic about it but I didn't see one.
We have an almost 3 year old grandson who has sleepovers. He also wakes Grandpa up each
weekday morning. Hubby was afraid the machine would scare our Grandson. What we did was show him
Grandpa's mask. He listened to the noise it made on Grandpa. The next day, when he came over in the morning
and went to wake up Grandpa, he said "Look, Grandpa has his mask on." That was that. No big deal.
I think kids accept it more than "some", meaning me, adults do.

