Why waive my right of withdrawal?

As a consumer, you are entitled to a legally fixed 14-day right of withdrawal. This would mean that, once we have received your order, we would have to wait two weeks before we can start with the services. However, in most cases, we do not have that much time. That's why I would like to ask you to waive your right of withdrawal so that we can immediately start our work and hang up your poster on time.