There are plenty things you can do during the Weekdays. For example - even though I don't know your level, you can take the Daily Quests in Morroc that will give you as a reward the materials to craft Bind Runes. That's one good and important thing to do, and nice income... Master Level 1 will be enough to start part of these Quests!
If you are even higher level you can and should definetely go to Jawaii Love Island and take the Daily Quests! You will be able to take them from Master Level 35 on, and they are much fun - and a lot of Mastery Points: if you use a %EXP Pet upon receiving reward, that %EXP boost will have its effect, wow!
In the end, EXP Boost can't be the "normality" for a game, those few days with EXP Boost are already giving some hard times to the storyline of the game. Many players get to Master Level 1 in a day and they don't really have an idea of the skills and of the class they choose.
Anyway, the amount of Mastery Points required to level up is part of the things that Warpportal will take care of! Just be patient and enjoy the EXP Events! :3