From my experience

Under one account with two characters made, you get to:
1) Share adventure book level and certain quests no need go here and there to redo
2) Share Pet Labor function
3) Those crafted head gear can transfer through adventure book
4) Adventure book quest can do together (Mine i use 2nd character to farm Pet adventure in order to get racoon leaf)
5) Board x2 bonus (Means the first character who submit the board quest after reset, the second one will not benefit the x2 reward)
6) The first launch reward from Rift (Same as Note 5)

What you don't share:
1) Kafra Stash !!!
2) zeny and items cannot transfer
3) Combat time (individual)
4) Pet adventure book

Did you know your pet gives more than x4 adventure meatballs? You need to click on the outer circumference of your pet, click all around it, and not just the middle. You will get roughly 16x adventure meatballs.

can i catch 2 porings as pet?

i already have 8 raccoon leafs from adventure. lol. did the quest and sold the rest.

lol.. got 2 from pet advanture.. 2 in one day.. im in heaven

wa.. equipment so nice 
satu keping orlean oso tak ada

Trust me, Wizard path really need Orlean Gown, then use Lich to recover back -20% CT