Anyone can wear whatever outfit they would like as long as it is appropriate. The wedding party will be wearing a mix of traditional Philippine attire, so that can also be an option.
Black and white mixed with Philippine's culture.
The venue will be a backyard wedding by the lake (river). Feel free to bring extra clothes to swim on and they also have some boats that they are willing to lend for anyone who wish for a little boat ride.
Other than the suites they also have 5 cabins that they can offer for the night. Do let us know ahead of time if anyone plans on staying in.