Yes, you must be a member to enter the Fishing Guild in RuneScape. The Fishing guild is north of Ardougne, inside the members-only portion of RuneScape.
Ardougne is only accesible to members.
Runescape 1 is also known as Runescape classic. It's members only now, and only members who made a RSC account before August 2005 can go on it anymore.
In the desert. For members only.
Yes, Castle Wars is a members-only activity.
No, the sawmill is a members only option.
Sorry to say, I believe it is members only.
Yes P2P only.
Yes.
Bass is a members only fish, only members can fish it.
Yes, currently only members can wear an Amulet of Glory.
Only members can get it, from treasure trails. However, both members and non-members can buy it and use it.