Yes, yes, yes - you need to oversee it.
Pickfords packed our house contents (and car) up two weeks ago - we are now doing indoor camping for six weeks!
Even with just two guys doing the packing (it took them two full days, with extra chappies being drafted in as they became available for a few hours (finished other jobs close by) it was busy. I'd done what others on the forum had advised - put stuff that wasn't to be packed into a separate room/cupboard with large 'DO NOT TOUCH' notices on - and still two items managed to get packed that I didn't want to be! Including my son's favourite orange shorts...
Anyway, be there for the packing, and the more time you allow for the shipping to go before you the better - we'll hopefully just have two/three weeks in the holiday house we've rented outside Christchurch before our stuff turns up.
It is weird at home at the moment - very empty house, but we've managed to borrow bare essentials from friends and family. Amazingly our two small boys have been fine about all of their toys disappearing - I went to the charity shop and bought a few books and odds and ends which seem to be fine at the moment..and can then be donated back to the charity shop when we leave.
And it was pretty stressful getting ready for Pickfords - had lots and lots of cleaning and sorting to do. Husband had hundreds of tools to clean (he's a mechanic) and I had lots of horse gear to clean (too much good stuff to even think about selling - wanted to take it but knew I'd have to clean it really well). The relief of seeing Pickford's lorry turn up was immense - and now we're just down to the last few things to sort - like cancelling utilities and opening bank accounts. It's taklen the prerssure off our last few weeks here in the UK no end. I would thoroughly recommend it!
Good luck with it all.