Red Arrow Twenty Four Hr Diner, located at 814 Elm St, Manchester, New Hampshire, 03101, is a popular dining establishment offering a unique dining experience around the clock. Here are some tips to enhance your visit:

1. Diverse Menu: With a vast menu that includes breakfast, lunch, and dinner options, there is something for everyone. From delicious homemade omelettes to mouthwatering burgers and sandwiches, their menu has a wide range of choices.

2. Local Favorites: Don't miss out on trying their famous Manchester sandwich, a local favorite. It consists of slow-cooked roast beef, turkey, bacon, and cheddar cheese, all served on freshly baked bread.

3. Quick and Attentive Service: The staff at Red Arrow provides quick and efficient service without compromising on quality. They are knowledgeable about the menu and can help with any dietary preferences or restrictions.

4. Vibrant Atmosphere: The diner has a lively and welcoming ambiance, making it a great spot for friends, families, and even solo diners. The retro decor adds to the overall charm.

5. Late-Night Dining: As the name suggests, Red Arrow operates 24/7, making it an ideal spot for late-night cravings or post-night-out meals.

Remember, these tips are based on general knowledge, and it is always good to check their website or call ahead to confirm their offerings and any specific guidelines they may have.