Hi Elina!
Thank you for bringing your question to the Disney Parks Moms Panel!
I am sorry that you haven't had any luck securing a reservation at
Be Our Guest Restaurant inside
Magic Kingdom Park. That is definitely a very popular place to eat, and with good reason.
Technically, it is not a "requirement" to have a reservation, but it is strongly encouraged. You should definitely go up and ask about waiting for a table, but please know that it most likely will not be an option. I have heard of some people doing this and lucking into a no-show slot.
I also suggest that you keep trying to get a reservation leading up to your trip. Guests just need to cancel 24 hours prior to their reservation, so a time may open up for you to grab.
I hope this helps! Please let me know if you have any other questions and I sure hope you get to have a meal at Be Our Guest.
~Lori