Is there an entry cost?
Time of opening and closing?
Is it open all week?
Is there an information area nearby?
Yes, there are some fees to see the Apollo Temple, and the museum. come on early morning (8:30AM) to avoid any crowds. The good news - there are no fees to enter the Acrocorinth.
Yes, there is an entrance fee. Unless you belong to a special group (educator, a museum employee/affiliate) with a valid ID, you have to buy a ticket to get in, and prices vary according to age, status etc., and probably the time of the year. The same goes for the hours of operation; during the tourist season i think they are open all day; the day i went there it was closed between 3-5pm, but am not sure about summer time hours. There is an information kiosk and the locals are more than glad to help you. Make sure you visit the Acrocorinth near by -great views and a great place for hiking/walking/meditation; you will need more than an hour to walk the whole fortress, so make sure you have plenty of water and proper sunscreen. Juice it up and enjoy! Cheers!
Yes, there is a fee, but don't ask me how much. That I remember to, I left my Hungarian identification card in the car,- parking far away-and I had to pay a double fee since I couldn't prove my EU citizenship. The fee is maybe 6.-euro if you're a citizen, and 12.- if you aren't. For your other questions I can't answer, but sure you can find the info on the Internet.
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