Scooters are a blast, highly recommend! Just be aware that they will run you between $45-60/day, depending on how busy they are. Or you can rent a car, minivan or safari truck for about $85/day. So if you are in a large group, it will definitely cost a lot less to go that direction. The only reason I would recommend a cab was if you wanted someone to give you a guided tour of the island or something like that. But it's not a big island and a map comes with your scooter or vehicle rental.

What time of year are you going? We've never had an issue finding a mooring ball. We generally leave NS near first light and arrive by 11ish, though. Don't see any reason to arrive any later than that. We don't mind eating breakfast underway and we want to have as much time at Anegada as possible since we love it so much. You definitely do want to arrive with the sun high in the sky. Apparently, this has been a busy winter/spring season. It very much depends when you go. I have definitely seen the mooring field very full and it should be noted that not all balls have adequate depth for even a shallow mono. We saw someone hard aground on a trip about a year ago on one of the balls closer in to the beach.

Excited for you, you will love Anegada!!