I think it was fun moreso depending on you personality. I like/liked it (although some may think it's odd for my age to love Tinkerbell and collect Disney Fairies figures
) just because I personally enjoy dressing-up and fairies. I think yeah, it can be fun for all ages, but some older people might just not like it because they don't find the whole fairy thing appealing. Other adults, even some here on the forums, love Disney Fairies and PH because of their personality.
All in all, yeah it's fun for all ages, just not all people.