御客さん[okyakusan] guest
御客様[okyakusama] guest
押掛け客[oshikakekyaku] uninvited guest
佳客[kakyaku] good visitor
花客[kakaku] flower-viewing guest

華客[kakaku] special guests
雅客[gakaku] man of letters
看客[kankaku] spectators
観客[kankyaku] audience
観光客[kankoukyaku] tourist

お待ち遠さま[omachidoosama] I'm sorry to have kept you waiting
果報は寝て待て[kahouhanetemate] All things come to those who wait
歓待[kantai] warm reception
期待[kitai] expectation
期待値[kitaichi] expected value

期待どおり[kitaidoori] as expected (positive events)
虐待[gyakutai] abuse
供待ち[tomomachi] attendant's waiting room
最恵国待遇[saikeikokutaiguu] most favored nation
請待[shoudai] invitation