I have bought the tickets. I will watch the film in the cinema.
Why is this so?
In this context, "have bought" indicates that the action of purchasing the tickets has been completed.
The addition of "will" before "watch" signifies a future action, conveying that the user intends to watch the film in the cinema after buying the tickets.
This construction provides a clear sequence of events, expressing the user's current ownership of tickets and their plan to use them for watching the film