As Phoneman has already told you, there is only one bowling alley in the Bethesda area-"Strikehouse"- which caters more towards entertainment and recreational cosmic bowling. There is also a brand new house downtown where a lot of the celebs like to hang out.(Gilbert Arenas, members of state, etc) It is located on the same block, or very near the Verizon center. I am told that games are very expensive down there, like $7.50 per game, to bowl.
Everything else close to where you are staying is in Gaithersburg, as mentioned by JUP. Good luck. Hope you enjoy your stay, nonetheless.
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Duct tape is like 'The Force'. It has a light side and a dark side, but it still holds the universe together.
Some days you're the bug; some days you're the windshield.