Just to remind you, for the coming retreat in Washington DC you will need :
A camping sleeping mattress
Your own towels (and personal hygiene stuff)
Zafu (not zabuton)
An Oryoki Set (to eat meals)
Comfortable cloths to sit in
Bring your Rakusu / Kesa, if you have one
I look forward to practicing with you.
PS: For those coming from outside the USA, make sure you have pre-clearance from US Immigration, even if your country is part of the Visa Waiver programme. Also, you'll need Dokan's non-Buddhist name and address to give the authorities as the place you'll be staying while in the US. You'll need that with you when travelling.