Hi there! Can someone correct my sentence to make it sound like a pro please.

Dear Mike

I would like to inform you up front that have an upcoming event on Tuesday 2 November 2021 in which 50% off promotion.

In preparation for this event, I would like to ensure that the exact quantities would arrived base on the issue request.

Thank you for your usual support.

Question

Hi there! Can someone correct my sentence to make it sound like a pro please.

Dear Mike

I would like to inform you up front that have an upcoming event on Tuesday 2 November 2021 in which 50% off promotion.

In preparation for this event, I would like to ensure that the exact quantities would arrived base on the issue request.

Thank you for your usual support.

Answer

Dear Mike,

I wanted to let you know that we'll be having a 50% off promotion on Tuesday, November 2d.

Let me know how much you'd like to order, so I can be sure we have enough in stock.

We really appreciate your business.  Thanks for your support!

Answer

Dear Mike

I would like to inform you about an upcoming even that will take place on tuesday, the 2nd of November 2021 and we have 50% off promotion.

With regards to this event's preparation please order in advance due to limited stock.

Thank you for your support always.