actually u can travel to Gridania by walking.. Uldah -> Central Thanalan -> Eastern Thanalan -> South Shroud -> Central Shroud -> Gridania.. but at ur current level, u'll encounter the mobs along the road that may attack u.. but trust me, it's fun when u r still low level and u feel the 'danger' when u r exploring the world.. during my first time in this game, when i was still a low level, i travel from Gridania to Uldah by walking.. and it's fun!! but u must be careful..