A beutiful trip on a last gasp of summer weathersay, Columbus weekend. Suggest buying tickets on web in advance which I assume will give you ability to avoid lines. Ticket sales help however VERY efficient and kept long line moving quickly. Understand they are't rude when they rush you along as it is all in the spirit of the greater good.
Departing From point Judith RI you decide if you want to go fast or slow by your boat selection. A 1hr. or 1/2 hour shorter trip for a nominal convenience fee for the faster ferry. Personally I like the longer ride so this review focuses on the that version.
Consider your seat strategies. Get on early if you want to get a table that seats four or if it is an inclement day and you want to be certain you are inside. Just understand that once you board you can't get off and re-enter.
Plenty of people watching fun to pass the time. Basic beverages and bar with light snacks available Of course a restroom is on board.
Think ahead if you need to rush off the boat upon arrival and not wait in line. Simply select a seat in the back near the stairs. If you want to relax I recommend sitting in the middle where there are plush padded seats. For the Kate Winslow & Leonardo DiCaprio adventurous types, you can sit on the bow benches and savor the approach of landfall. The crew tends to discourage the "I'm king of the world" thing.
Block Island is a delightful paradise. Great for a romantic getaway or battery recharge. Nice place, with nice people and nice atmosphere.
For me it was a great way to savor the end of summer before we are up to our eyeball in snow.