Getting away can really help you to stop focusing on your symptoms and all the added stress they bring to you life. My doctor suggested this on many occassions and said that if I couldn't afford going somewhere or handle a long drive, plane ride etc, that even spending the night at a friends or family members house was necessary to get away from things for a while.
Do you experience motion sickness? Did you before your accident? I know for me, I did prior to my accident, so this was compounded until I finished vestibular rehab. When I visted my parents, (6 hour drive to the beach), I took dramamine and my doctor also prescribed something to mildly sedate me, so I slept the whole way. This seemed to help.
However sadly I was hoping the calming of the ocean would help me. But I have noise sensitivity issues and the roaring ocean really made my brain unhappy. Ear plugs helped. Also, be VERY careful to keep yourself hydrated. Even the smallest amount of dehydration can make your symptoms flare like crazy! I learned that lesson the hard way and had to be carried to the car one of the days we were there. Lesson learned
Hope this helps