Beveridge Place Pub has had food vendors outside, including the occasional hot-dog-type cart, don’t know about that late. Sadly for us late-night types, WS has not yet developed much of a late-night food culture. Feedback Lounge’s kitchen is open until 1 am Fridays-Saturdays. Supposedly the Chinese restaurant Chopstix is open until 1 am. Neither of those offers hot dogs, to my knowledge. West 5 has hot dogs on the menu but I can’t tell from the website how late they’re served.