Exp and ability to wear a Rune Platebody and Dragonhide.
A lot of quest give you exp lamps. You can also check the reward of the quest before you start it.
You obtain Costume Points, by successfully completing Random Events which reward you with a Costume. Then you redeem these points at Thessilia, in Varrock.
Yes FREE MEMBER SHIP!!!
You have to be a member. If you are, then you go to Silvermist's Grotto and do a Winter quest for her. She will give you the key as a reward to one f the quests. If your not a member then you are not permitted to have access to this special event.
Nothing it's a reward, you can wield it, then go onto your equipped items screen then right-click and click operate to have your character emote with it.
No
Shiny Boy Armor can be attained through completing the series of quests beginning with Rise of Omega Quest on Adventure Quest. There are 4 quests total ending with Big Mech Attack. When the final quest is completed Shiny Boy Armor will be available in the reward shop.
There is none
good stuff
it is a reward from soul wars
you can find them in chests or as a reward in quests
Its a random chance reward from arena quests.