OMG, this thread has exploded!
mumslife, thanks for the advice about train travel. Will check it out / get DD to check it out.
millymae, your experience sounds great. I really hope DD's will be the same. She doesn't' have to share a room, or even a bathroom!
cooroo, so sorry to hear about your mum.
. What a difficult time this must be for you.
marianne, I completely sympathise. I was feeling this way a couple of days ago - endless preparation, DD anxious and therefore grumpy, and much as I love her I was thinking it's high time she left!
mrsbartlet I love that you and your DD are going to write to each other. When I first left home I used to write loads of letters to family and friends and there's nothing like a fresh letter arriving in the post.
pugalugs,
at mexibombs!
dontwanttobe, sorry you are feeling bereft.
I'm sure this will get easier.
mossagate, sorry to hear about your FIL. 
lapsed, you are very brave to have given all those Talks - I am in awe. I took the coward's way out and slipped some condoms into the treat hamper. 
fairenuff, another one here with a younger DS who won't know what's hit him with all the parental attention. Those headphones will have to come off! Thank goodness I have a couple of years before we start the whole open days/UCAS/offers circus all over again.
I surprised myself yesterday - no tears at all. Mainly I felt excited for DD and glad that all the preparations were coming to fruition. We set off at 9am promptly yesterday as planned, but shortly after we reached the M25 I realised I'd forgotten the treat hamper I'd prepared for DD. We lost an hour in total going back to get it, but still managed to get to campus for our parking slot. I have to say DD looked stricken when the moment came to get out of the car.
Very busy; queues for the car park, queues for trolleys, but luckily no queues to pick up key card for DD's building. Lots of helpers everywhere - one of them helped us load our trolley, then hauled it for us all the way to DD's room. Unpacked for a while, then went for a very late lunch and to buy a pillow and an umbrella (don't sleep on the pillow you are intending to bring to uni the next day!). We were able to park off campus very close by and then stroll into the city centre - great location. When we got back to the room, there were more flatmates around and it was clear that we were no longer relevant, so we left. DD was still looking very anxious and I really felt for her - I could see she was dreading the ice-breaking phase.
Two hours later while we were driving home, a bunch of happy texts arrived; DD loved her treat hamper, her flatmates are really nice, they're all going out this evening. Felt so happy and proud of her. And SO pleased we went back for the hamper!
We have agreed that we will not see DD until the end of October, when we will go up there to see her. I feel that coming home will make any homesickness more difficult for her to deal with. Then she will come home at Christmas. Brave plans, but I wonder how I will feel when she has been gone a couple of weeks. I am going to really miss her.