To claim a welcome bonus at an online casino, there are typically a few conditions that players must meet. For starters, you must be a new sign-up and cannot have an existing account. In some cases, you may also need to claim the bonus manually by clicking a designated button during the registration process or on the cashier page. Additionally, to qualify for the bonus, you will likely need to make an initial deposit, although this requirement varies between different casinos and promotions. It is essential to read the terms and conditions carefully to understand the specific requirements and ensure that you meet them to claim the bonus successfully.