Yes You have to until you beat him
unfortunately you can't.
You have to get to the middle of the turn back cave (available after beating the league, where giratina is in Pokemon diamond and pearl), and there will be an item and a portal to it
You can't unless you saved before you released it in that case you can turn it off and it will be back in your party and you can go on as normal.
you defeat team galactic in the area and save the three pokemon from cyrus
At night Shaymin reverts back to its land form.
you have to beat Cyrus then all the water comes back then surf there
In turn back cave
No, since Misty chose to stay back in Kanto, she will not be in Pokemon Platinum.
There is not a code to get the griseous orb in platinum you must go down spring path into turn back cave and go to the end. There will be a portal. Go through it and you will get to the reverse world. When you get to the end wher you met giratina and saw Cynthia and Cyrus there will be the griseous orb.
portal to distortion world+griseous orb+ancient bone
yes, it is an ID. It is printed on the back of all Pokemon platinum DS, cartridges.
The turn back cave in Pokemon Platinum is in Seodoff Spring near veilstone city
in turn back cave
After defeating the Pokemon league. Go back to the torn world from the turn back cave and get the griseous orb.
in Pokemon platinum yes in the distortion world and in turn back cave only if u fled in the distortion world
its impossible to do that, Pokemon cannot go back to their first form
Beat the Pokemon league again and go back to spear pillar and you will see dialga again.