A warm welcome to Dementia Support Forum from me too, @maggieanne.
I'm glad your son and daughter are visiting on Monday. They will be able to tell you how he is settling in and start to make sure the home know important things about him.
When you do go and visit, try and be as cheerful as you can. Your husband will pick up on your mood and if you are sad, he will be too. Just say how lovely it all is, and how lucky he is to be there, even though that is far from what you are feeling. If he asks to go home, say something along the lines of when the doctor says so. As @Gosling says, when it is time to leave, just say you are off to the loo, don't make a big thing of saying goodbye. With my mum, I used to time my visits to end at lunchtime. Mum then went into lunch and I slipped off home.
It is beyond tough, and these first few weeks will be the worst. Hang on in there, and know there will always be someone to listen to you and lend support on this forum.
