How to have a lie in

My husband, A is not a morning person. He is a great dad and husband, but not a morning person. It takes forever to get him out of bed, like a teenager, and then its grumpy time. Most mornings I am up and raring to go, in a good mood and looking forward to the day ahead. But occasionally, I really want a lie in, and fighting for this just wakes me up anyway so I never get one! If I want one, I actually have to plan it in advance and get clearance from A and strict instructions to get up quietly with the children, leave me undisturbed and shut the door.

Today, I woke up and decided to take the sides off my little boy's cot, and turn it into a junior bed, as it is a convertible cotbed. I've always disliked the look of cots, they are just wooden cages after all, and I've been waiting till K became old enough to sleep in a normal bed. I also did this because K has been waking up at 6am and instead of laying there quietly or calling out, he cries. He cries really loud, until someone comes to get him out. I'm hoping with this freedom from the cot he will get up in the morning without crying. The downside to this is that he might be climbing out of bed every two minutes...as R did the same when she graduated from the cot, I think it took about 2 weeks for the novelty to wear off, but it's the price I have to pay for a more aesthetically pleasing room and to be able to stay in bed till 7am without being woken. That might happen in few weeks time, and over the next couple of weeks, I am expecting and prepared to be sitting with K in his room and making sure he stays in his bed until he falls asleep.
It took me a full hour to convert the bed, in spite of my two assistants R & K.  K took ownership of the toolbox and after inspecting each item, his job was to make sure that the entire toolbox contents were scattered all over the bedroom floor and in my way all the time. R wanted to hammer bits of wood but I didn't have the heart to tell them to go away, so I let them 'help'. I got R look after the nuts and bolts and passed them to me when I asked for them, and K handed me whatever tool he thought I needed. When it was finished, it looked so cute. R and K were also extremely proud of their work and jumped into the new bed saying they wanted to sleep in it together. Let's see what happens tonight. I can foresee conflict. I have a strategy in my head for dealing with this and it should work because I can predict my little ones quite easily.