Bringing Friends & Family over for a UK wedding

We are already married (Vegas 11/06) but we want to have a proper reception when we get settle in the UK.  We're thinking the summer (07') and Im going to invite about 20 people from the US.  I know I have a LOT of planning to do starting in two weeks when we get to the UK.

Does anyone have any tips on how to help my guests book flights/hotels and stuff to make things a little easier on them?  I read somewhere that for destination weddings, it's nice to give your guests (the ones that have travelled) a little welcome gift or something.  I am the least creative person in the world though so if anyone has any tips or ideas, lay em' on me!

I'm having guests come to the US from overseas...we've let them know the best time to book to get good deals.  We booked a block of rooms in two hotels (two price ranges) so that they have options of where to stay.  We are making sure that they have modes of transportation available to them.

For their rooms - we'll have a bag with the following items:
1. Water bottles for each person
2.  A map of the area if they want to explore
3.  A list of churches in the area (in case anyone wants to go - my wedding is during Easter weekend).
4.  A list of restaurants & snack places for those meals we're not covering
5.  Directions to every event that is taking place
6.  A list of important numbers (like my mobile, family numbers, reception number, etc)
7.  A bunch of little snack stuff - pretzels, sweets, etc.

Hope that helps!

are they all flying from the same place in the US?  if so, you could arrange a bus to take them to the airport, and coach/transport from the UK airport to the hotel.

you can also inquire about group rates for plane tickets...