Appeal letter to hotel for profile reinstate / change status

Please help me to write an appeal letter to hotel for profile reinstate / change status. I need to send it by email to the security request department.

Here is what happened:

I stayed at the hotel with my mom and sister at end of October last year. I was 24 then and my sister was 20 (her birthday is the end of December, so it was about 2 months before she was turning 21). I played slot machine at a casino in the hotel where I stayed. My sister pushed the slot machine button about 3-4 times while I’m playing, and we got caught by the security. All three of us didn’t realize that my sister was a minor at that time. (I guess we were so excited that we made some money out of the slot machine and in my home country, the legal age for a casino is 18). We admit that it was a mistake and apologize. We were kicked out and banned from the hotel which means we can’t make any reservation under my name. One of the security officers told me that I could write an appeal letter so that they could decide for profile reinstate/change status.

Please remember it is an appeal letter so try to write the letter as politely as possible with respect.

Please include my hotel member number (just leave it blank), my name (just leave it blank), an explanation of the situation, admit that it was a mistake, how much I reflect on myself, and if they could change status or profile reinstate.