I prefer to take the route of simply completing the game the first time through. If I like it enough, I will usually go back and try to at least 80% it. I find some sidequests to be utterly boring, and usually yield pointless rewards. I just like to play it the way a younger child would play. If I notice a secret, I'll go for it, but I don't really go searching for secrets.
i always go through the games casually the first time with , eh a decent amount of side quests but not all, the 2nd time through i do 100% usually , and 3rd is mostly 3 heart challenge or casual or 100% lol just what i feel like doing
I've tried a little bit of it all, haha. My ultimate goal in every game is to get 100% eventually, but I usually don't focus on that with my first playthrough. I've also done some three heart challenges and timed completions of the games.
I love playing through the game normally while exploring everywhere that I can for secrets, bonuses and sidequests! after I beat the story I usually go back and try to find anything that I missed. All in all I like to soak up the game and get the most out of it.