Yes, there is: finishing the mission in-game will also get you extra rewards.
What happens if a player buys only one token but at the end of the event they do not have all the other tokens to finish the whole marathon?
All unused Tokens that have been purchased in the Premium Shop will be compensated with 600 each between 27 March and 27 May.
If I buy a Token, will I still be able to play the currently active Daily Mission?
Yes, you will be able to play the Mission.
If I buy all 13 tokens and receive the tank, will I still be able to play the Missions and get the rewards?
Yes, you can play all the missions and you will also get a reward for each that you finish, except the tokens.
What happens if a player buys let's say 5 tokens in the Premium Shop but never finishes any daily missions?
Each of the 5 tokens will be compensated with 600 each, so the player will receive3,000 in total. The compensation will be distributed between 27 March and 27 May.
What battle modes count towards the mission goal (random battles, team battles, others)?
Only battles fought in the Random Battle game mode will count towards the mission's completion.
Will there be any way to check the number of tokens you have gathered?
The tokens sold in the Premium Shop cannot be tracked in the user interface (UI). However, the free tokens (tokens earned by completing the missions) can be tracked in the Missions window, together with the completed missions.
Do Premium tanks count towards the mission progress (damage/tanks destroyed)?
Yes, you can use Premium tanks and they will contribute to the mission’s progress, provided that they are at least Tier IV.
What if I buy 3 packages with 5 tokens each and get 15 tokens in total? As I need only 13 to finish the marathon, what will happen to the extra 2?
All excess, leftover or unused tokens purchased in the Premium Shop will be compensated with 600 each between 27 March and 27 May.