The official map marks toilets, some accessible toilets, drinking-water points, shops and play areas. The park information office can help with local conditions: 0422-47-6900. The public grounds are free. Zoo admission is ¥400 for adults, ¥150 for junior-high students and ¥200 for people aged 65 or over; elementary-school children and younger enter free, as do qualifying Tokyo junior-high students. The zoo normally opens 09:30–17:00, with entry ending at 16:00; Mondays are usually closed, moving to the following day when Monday is a national or substitute holiday. Its year-end closure is 29 December–1 January; check the current calendar for exceptions.
In October and March, boat hours are listed as 09:30–17:20, with last rental admission at 16:20. November–February hours are 09:30–16:50, with last rental admission at 15:50; Wednesdays in December–February are regular closing days. Other months have different hours. Recheck the boat operator’s timetable for your date.