Just use 2 tents, problem solved. You can also use a tent on bosses from the start of a fight to cause a lot of bad status changes. Buying 99 potions is common sense, that's something I do ASAP in any FF.
If you really have trouble, I'll have an entire video walkthrough for you:http://www.youtube.com/view_play_list?p ... 0F390195AD
But I will not get every item in dungeons, but I have included all locations of the Chocobo Treasure Hunt, which should help a lot. Just type the name of the chocograph in the search bar and 99% you get the video on the first place.
The only gripe I have about Final Fantasy games is that you don't have special looking attacks, besides limit breaks. All characters except Freya, have the same attack animation. The special skills are just a normal attack with some flashing effects and deals more damage.