Time schedule from Alpensia to 蠶室 are 12:40 & 16:40. Its stop is just next to 蠶室 metro station but no idea where is Lotte World Hotel cos I ran into the metro station after getting off the bus.
因Lotte world 係江南2号綫上, 去東大門, 明洞要轉綫, 但都可接受. Lotte world 係可以直接從地鐵站返酒店, 好方便, 下面又有Lotte mart開到12點, 買野好方便. 其實方唔方便睇吓你行程, 如要搭早車去Alpenisa同去Lotte world 玩, 甘就good fit.