Harrison wakes early 6am and will sleep from 12.30pm for between 1.75 - 2 hours, then bed at 7.30pm. I wake him at 3pm latest, so although he can play up at night, it tends to be finite because he is tired as he wakes so early and is a short night sleeper!
Bedtime antics make me wild because it is MY time! So unless marbles or stickers work, you can only really stick to your guns. I have to say that I seem to be becoming hardened to it - there were some fireworks here a week or so ago, and they must have frightened H to begin with. Fair enough, calmed him down, gave him water etc, but then he had a right old carry on until I REALLY had had enough and told him to go to sleep and wouldn't go back in despite whinging and crying. He went to sleep.
I think I would have to resort to telling the little minx that it is her bedtime, it's Mummy's time etc and that you will not play any games and perhaps let her get on with it. She may well cry, but you know full well that it will be a temper cry rather than anything else, stick your head round the door once and then see what happens?
Can it really be cio when they are acting up? Sometimes we do everything to avoid that escalation especially at bedtime but then as you well know playing up eats into sleep time. (I don't agree with cio which is why I spent MONTHS sorting H's sleeping) but Wi/wo at this point is really fueling the issue I think. having said all that H doesn't really tantrum, so if left he would cry and whinge, but not make himself sick etc
All I can say from my experience is that I feel that if I had been much firmer in the beginning instead of pandering to all the jumping up and down, we would have resolved our issues a lot sooner, and that a little discipline at certain times really doesn't do any harm. There needs to be a step beyond wi/wo, and that is "goodnight, go to sleep, see you in the morning!" LOL!