Is AWS Lambda a good choice for managing payment processes?

I'm working on a platform where I need to place a hold on a customer's card about three days before a scheduled booking. Our backend is on ECS, and I'm considering using EventBridge to automate the job that places this hold and updates the database. I have the option to either use AWS Lambda or Fargate tasks for this process. Lambda seems appealing because of its quicker cold start times and the fact that the job is short-lived. But I'm wondering if Lambda is commonly used for critical functions like payment processing, or if it's better suited for less essential tasks.