I hope your move does go smoothly fishcake, where are you moving to area wise? Paying for packing for us was fabulous when we moved. You didn't have to empty wardrobes or drawers- the removal men literally lift the drawers out full, transport, and slide them back in in the new house, rails for all your wardrobe stuff etc. Made it loads easier if you can't afford full pack/ unpack service.
Speaking of bossy dd's, today my dad visited and she insisted on walking, zero degrees, meant to be going to the library. Her majesty decided she'd walk to the playground instead. So my poor dad ended up going with her to the playground in bitter cold while I got to go to the nice warm library to swap dd's books :-) . And while we're on the subject, go the heck to sleep child!!! 9pm and counting...
purple, if dd would lie quietly in bed with me and go to sleep co-sleeping might be tempting. She won't though, she sings, pokes me, insists on lying on me when I'm already struggling with reflux and rib pain, stands up and tries to walk around (in her sleeping bag) so falls over, then cries, etc etc... From 2:45 to 4:30 when i lost the will the night before last she showed no sign of going to sleep in bed with me
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Anyway, biscuits, I just ate my 5th creme egg since you mentioned them, therefore its your fault 
And car seats are a nightmare. I have shown a friend our britax today at dd's music group- she has pointed out its missing any newborn padding and agrees its totally unsuitable for a newborn-eeek! Glad i tried it and realised now though. I text my friend who lent it to us but no reply yet, but if she still had the padding surely she'd have brought it with the seat?! I would go for teaching your ds not to open the seatbelt. is there no gadget you can buy to fit over the belt buckle to stop them undoing it til they're big enough to properly understand?