Hi
For the ESTA please use the Best Western Forth Worth address above, we always start there, and they have a waffle machine for breakfast. Keep the paperwork with your hand luggage, you still have to fill out the green travel waiver on flights to the USA, and will need the address for that too.
I think most of us are travelling on the same flights, so if you forget, you'll have back up on board.
When booking insurance, remember if you have travel insurance with your bank account, or have an annual multi trip policy, you only need to book the hazardous/extreme sports cover, leave your luggage, flight cover etc on your existing policy, it's quite a bit cheaper.
The 2011 forum will be up in the next 24 hours, ready for the kit lists, inventories, travel plans and all the other good stuff we need to prepare before the first Storm Chase reports start in 60 days!!!!
Ian