Writing Feedback / IELTS Letter: Request some changes to the hotel reservation for a business meeting [2]

Dear Friends, please correct my letter and give your valuable feedback!

I am writing this letter to request a change in my meeting room booking at your hotel with the reservation reference 1234.
As per my original reservation, I have booked the Zebra meeting room with six participants. But due to the recent business collaboration with ABC Company, our meeting attendee has increased by four, thus we need the room with capability of ten participants. I would appreciate, if you could make the necessary changes in my booking and send me the revised invoice.

Also could you please send me what are the facilities are offered by the hotel for the meeting rooms, especially video conference system details, internet access and LCD projector options. I would like to receive the above information as soon as possible but not later than our reservation date.

I am apologizing for any inconvenience caused in this matter and thank you in advance.
I am look forward to hearing from you soon.
Yours Sincerely
Shiravin