Paid 250Baht to get into the Grand Palace and Wat Phra Kaeo, upon entering the palace, looked up and was surprised to see a sign that says it's FREE for the Thais. Later, I found the same thing for some other temples/wat. I find it a little odd, here in Malaysia, everybody pays.
Money can be exchanged at currency exchange services of banks and at authorised money changers. Rates vary slightly from bank to bank. The currency exchange services are often box offices in front of bank branches. Many hotels double as authorised money changers though their rates are usually not as good as those of banks or independent authorised money changers. A small number of independent authorized money changers offer better rates than banks.
O.K., here's something on currency exchange: We are already living in the year 2001 where technology has literally taken over most basic functions. Yes, even as basic as withdrawing cash! So, no need to change all your money into traveler's checks or Thai Bahts before arriving.
You can actually withdraw ALL the money you need at any ATM machines here in Bangkok.
Yes, just ensure that your ATM is linked to the 'Cirrus', 'Plus', 'The Exchange', 'Maestro' networks. Once it's linked, you can withdraw Thai Bahts even from the remotest Thai banks here in Thailand. And the important thing I've discovered about using this method is that you actually BENEFIT from the LOW INTERBANK EXCHANGE RATES used. Trust me, it'd work. I've tried it countless of times before and have NEVER been disappointed.
What you do is the minute when you arrive at Don Muang Airport, just head straight to any ATM machines located just outside the Arrival Hall and you can withdraw cash for your holiday enjoyment. Of course, the ONLY person I can see that'd fume over this recommendation of mine are the money changers.