Write an invitation to your birthday party

Dear Hann,

How are you doing? I hope you are doing well at school. Please send my regard to your parents. I am planning to organize my fourteenth birthday party on Sunday next week. I was wondering if you would like to join with us. The party will take place at a restaurant at 85 Trang Tien Street and start at 8 pm. Because there might be crowded, I suggest that you should attend beforehand fifteen minutes. You can go with your friends or family as long as the number of people does not exceed 5. Besides, you can wear everything you feel comfortable but still be polite. I have invited our old friends, I think you will feel happy to meet them again. The party will last about 2 hours. Please remember to bring your invitation. You will not allowed to come inside if you do not have it. That is all for now. Please let me know if you can come at your earliest convenience.

Sincerely yours,

Mathew

Please check this for me. Thanks a lot!