Several posts have been moderated from this thread due to them being totally off topic and also lacking respect for other member's opinions.
Please ensure you answer the question posed and also remember that any opinions expressed are your own and back them up with personal experience or from a reliable source. Every hamster and situation is different and there are different guidelines for different hamsters.
Original poster - marmaladesmum
I personally have always found hamsters to be wonderful pets for children. They are easily trained to get up when called and there is no harm in waking them up for playtime in my experience, at a time to suit you then letting them go back to bed! They do get up anyway throughout the day to feed and toilet as all small mammals must as they need to feed frequently to maintain body temperature.
I have raised many, many hamsters and my daughter has had them since she was a year old. We have always trained the hamsters to wake up when you call and then bringing them out for playtime at a suitable time for you and your family routine. This is essential with youngsters for them to enjoy their pets. What we do is we stroke the bars and call the hamster or rustle the bedding through our fingers. They nearly always pop out as they are curious little creatures. Once out give a little treat or bit of veg, let them have a drink if they want and go to the toilet and then get hammy out for handling time, supervised closely for youngsters. It can always go back to bed after a 15 minute playtime. It won't stress your hamster at all I can assure you if ours are anything to go by!
As long as the child realises that the hamster must only be woken at certain times and at others needs left peacefully it will learn to respect the hamster's privacy and also that kindness and gentle encouragement will soon make the hammy want to come out to them. Letting them do the calling and offering the treats, changing the water and measuring a scoop of food out also encourage responsibility. Give them the job of making sure the cage door is firmly locked and explain how hammy could be hurt or eat something not good for them if they did escape. (You check it afterwards of course and even lock it with a padlock if necessary.)
I'm sure you can soon train your hamster to get up and come out. There will sometimes be nights when they just want a lie in and may not come out and of course you should respect this however this is not common (except as they get older).
Let us know how you get on