You'll enjoy it! I just drew money out of the HSBC machine in the nearest little town, but beware that they are few and far between. It is probably a good idea to take some money with you to pay for a taxi to get you to said machine. Taxis are cheap and if you want to see the island they are the best way. One Sunday a local driver took us wherever we wanted to go and sightsee, he politely refused official payment, saying he was off duty, so we gave him the equivalent of about £10 as a thank you and he was thrilled. This was about 10 years ago.
Hotel staff are very attentive and not well paid so tip decently at the end of your stay. It is not expensive to tip others and it is appreciated. It was cheaper to get a taxi to the airport than to pay for the transfer fees.