<p>"Once a rotation is over, the drome level of all players will be reset to zero and their starting level will be reduced by five."</p><p>Source: <a rel="nofollow" href="https://www.tibia.com/forum/?action=thread&postid=39196391#post39196391">official boards</a></p><p>Therefore, if you don't fight in the arena you won't get any points because you still don't have a drome level, only a starting level.</p><p></p>level.</p><p>As suggested by Hunter of Dragoes in the comments, "advancing 1 drome wave is enough to put you on a drome level close to the one you got on last rotation".</p><p></p>