I did wonder who 'Magenta Falls' was... I assumed it was one of Mimi's friends.
(cue shocked 'What, so you assume it was me WHY exactly?' from Mimi)
I'm only one achievement away from 1000/1000 (and it's the utterly ridiculous 'play for 50 hours' one... this actually means '250 game days have passed' which in turn means that all the time you'll spend pissing around in the shops or journal DO NOT COUNT) and have more or less had my fill of the game - as the game wears on the pinata's demands get increasingly ridiculous and obscure and eventually you'll give up trying to guess what weird combinations of items the game wants and just read the excellent FAQ on GameFAQs.
In the meantime:
-if a wild pinata is ignoring the food you've left out to make it move in, put your cursor over it and push B to go into the menu - the pinata will turn to look at you and this apparently resets their AI so they'll stop whatever they were doing and work out a new thing to do... which might be to go eat that food
-don't get too attached to any pinatas - at the best of times you'll have five species MAX in your garden as anything more than that is unworkable
-if you get really really attached to a particular pinata or family thereof and can't bear to sell or beat them to death when they've outlived their usefulness, stuff them all into a crate and post it to yourself
-give the beggar 1,000 coins
-some flowers let you dump all three loads of fertilizer on them at once (as opposed to trees where you have to wait for the next 'spurt' as indicated by falling leaves) so be sure and fertilize all your flowers to get a LOT of fruit/flowerheads/etc. Fertilizer is colour-coded
-don't waste too much time with Seedos or Leafos - Seedos only rarely gives you anything useful, and Leafos tells outright lies as her 'hints', in that ridiculous accent of hers
-master romance (which is I think seven or eight of the same kind) as many species as you can as this will come in handy later. Plus you then have eight or so to sell once they've served their purpose, as opposed to just two
-when doing the above, get your pinatas to have a marathon shagfest... line up romance sweets so they can go at it again as soon as the egg from their previous bumping of uglies is done. Your extra lives in the romancing game are based on the number of pinata of that type in your garden, and ones still in eggs don't count against that