Yes, TC's in US$ get a slightly higer exchange rate than cash.
Yes, we do offer daytrips to Phi Phi and Phang Nga Bay (no diving though in Phang Nga Bay).
Yes yes .... here I am again ... just in case anyone is interested the AUD seems to have peaked at about 29.40bt a few days ago and appears to be now on its way down again - drats and double drats!!! Today it was 28.85bt on oanda ... Im assuming it will be similar in Thailand. Kitty