It all has to be about him trusting you. For that reason I wouldn't agree to updates or pics, you may get in the heat of things and simply forget to do it and that could break his trust. I wouldn't let him hide and peak either, you're not alone that way. From your husband's side, you need to understand that when you are doing this, he will be flooded with emotions. He'll be excited, jealous, anxious, worried and maybe many more feelings. Going all night with all of those thoughts would be torturous and may change him forever. Do it your way, but maybe give him the concession that it only be for four or five hours and when your husband is busy doing something else, not just sitting at home wondering. You'll want to do it more than once and I think you know that, so the first time has to work.