TX DevFest begins on Friday at lunch and ends on Saturday afternoon so attendees from out of town can travel to Austin on Friday morning and return home Saturday evening. A limited number of hotel rooms were available for attendees from out of town. As of Wednesday, July 10th, these rooms are all taken.
If you are interested in car pooling from Dallas you can use this car pool spreadsheet to coordinate with other interested attendees.
A limited number of shared hotel rooms at the Hampton Inn Austin-NW were reserved for out-of-town attendees on Friday, July 12th. All reservations for shared hotel rooms were made by the conference organizers. Attendees will not be reimbursed for rooms booked independently.
You may contact the Hampton Inn directly and reserve a room at a discounted rate of $110. Mention the Google Developer Group TX DevFest conference when requesting the rate.
Some of the other hotels in the area have discounted rates with the St. Edward's Professional Education Center where the conference is being held. The discount codes are included in the links below, i.e. click the link and the discount code will automatically appear in the reservation form on the hotel web site.
There is also a map of all these hotels.