The wedding basics, no white, no black and no dark blue Black shoes fine. White shirt fine. No socks and sandals * See wedding ceremony under schedule
Whatever you want as long as no socks and sandals
70 - 90 degrees, lets say 80 average. Possibly cold at night
Lake fun stuff, swim suits, sunscreen, floaties, etc. See travel section link to your specific retreat for suggestions
It is fine as long as you work it out with who you are switching with.
Travel section has link to each property showing rules/guidelines/amenities and any other info you may need. You are responsible for your cabin.