I live in Japan, and have just asked my Japanese wife to look at your sake bottle and cup. What is written on the bottle is a chant used at weddings by the Shinto priest officiating at the ceremony. It's difficult, even for a native speaker of Japanese, to read and understand. It's like a poem. It has references to raising a sail on a sailboat, tides rising, and waves looking like islands in the distance over an open sea. You would probably have to ask a Shinto priest to translate it for you, and even then you'd most likely get what that priest's personal feelings concerning the meaning are. As for the cup, the heading is the word used for a type of Japanese angel. I would hazard a guess to it being similar in nature to the bottle, that being religious. My wife had to go to work, so we didn't have time to do the cup. Sorry about that. There is a translation of the writing on the bottle into modern day script on the Japanese wikipedia site. Link -
https://ja.wikipedia.org/wiki/%E9%AB%98%E7%A0%82_(%E8%83%BD) ; It's under the heading 歌詞. This is only what is written on the bottle, not the cup, and the following part is a short explanation describing how the chant sometimes changes - 結婚式では「出潮⇒入潮（いりしお）」「遠く鳴尾⇒近く鳴尾」と変えて謡う場合が多い.
I recommend you ask a native speaker to check languages in all cases. Especially languages like Japanese, which have hidden meaning taken as understood by the reader or listener. Google translator may do a good job on very simple Japanese sentences, but really can't do anything more difficult. Enjoy your sake. You should try to get hold of some Hakkaisan (八海山) sake. Drink it heated in winter, and cold Kubota sake for summer. Really good.
