I got in at about level 16, doing all side quests. At level 22 or so I took a break to do some of Grizzleheim, Triton underwater, Sunken city, all of Wysteria, Winter bane hall, Midnight Sun Pagoda, and Mount Olympus. So I got back at around level 35. Krokopatra was sooooo easy! Being a little bit ahead is a good thing, young wizard.
lol, same thing happened to me, I did sunken city, the underwater area in triton Avenue, Mount Olympus, Grizzleheim, and Wisteria, then went back to Krock.