Or you can go to hotels and restaurants with a slightly higher grade and scale, instead of those crowded. Ask the waiter if there are any discounts for birthday people, and almost all of them can send a dish, a birthday cake or something, because the service industry takes a fancy to this aspect and hopes to bring blessings and happiness to birthday people. At least you can give longevity noodles, hehe.
Almost all karaoke rooms can be discounted, or snacks can be delivered, or hours can be delivered.
But you have to ask these things before eating, and you dare to tell you when you ask them. It's impossible to ask for a discount after eating. Anyway, you have to ask the waiter in advance where you go.
That's all I know. I hope I can help you.