Normal
We sailed the Conquest in August and we booked Captain Marvin's through their website. Just like Natalia said ... give them a day or two to respond (remember there is a time difference) and they will send you an email confirmation. Although you give them a credit card to hold your reservation, they prefer you pay cash upon your arrival. If not, they will gladly accept your credit card. The entire staff are very pleasant and you get free rum cake after your excursion. I even bought the DVD of our stingray excursion! It was very memorable! I HIGHLY recommend it! Have fun!