After exiting the mrt station turn left to walk on the bridge. Keep walking straight pass the gates until theres a Popular, on your right, enter the door at the right of the popular and you will be able to see Long John Silver's
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Long John Silver’s is a sheltered area with air-con and its opening hours are from 7.30am to 7.30pm on weekdays and 7.30am to 2pm on Saturdays