This is a matter of time and money. The most profitable at the moment to invest these resources in the work on the project. Advertising and promotion will be relevant at a later stage.
The main point is that in the later stages the team will receive a large financial resource with the help of ICO. Having it will be much easier to implement and develop and promote the project.
The only thing that will distract from the conduct of offline events is the completion of the development of the game. The final stage is the most important and will take away all the forces.