I am now at level 131 (I forgot to post at level 130). Despite using calling cards, additional request cards, and snacks, I still have around 30 villagers to level just to 20 (none of my villagers have it level 25 yet). I spent a few hours the other day leveling my villagers just enough to get their special furniture requests, but I still have around 10 requests left since the new villagers have been added. I imagine I will climb a small handful of levels in the next few days with the new villagers. Oof....these levels are getting harder to earn.