I'd be very cautious about getting this expansion if your Mac is already throwing Error 12s or crashing-to-desktop and you don't want to uninstall oodles of stuff; as you might be able to tell from my description, this EP is very memory-intensive and will definitely wreak havoc on a delicate ecosystem

Overall this is a fantastic EP and having tried many of them would definitely be one of the first I'd recommend, especially if you love tropical environments and the entrepreneurial aspects of the game.

This EP is truly a dream come true and you will fall in love with The Sims3, all over again and become even more addicted than ever

I've also heard that the lagging is so much worse with the pets EP because of the added sims and wild animal spawning getting many sim pets stuck.

After a series of lackluster EPs and SPs I think this one is pretty good