Fisherman's Village has plenty of restaurants. Also, Marina del Rey Boat Rentals, Marina del Rey Parasailing, and Marina del Rey Sportfishing are there. There are also large boat charter companies: Hornblower and Tiki Mermaid.
Marina Del Rey Visitors Center has tons of info about the marina. They are open weekdays 9-5, weekends 10-4, and closed on Christmas, New Years, Thanksgiving and Easter. Their website is www.visitmarinadelrey.com
If you're interested in a ride around the marina in a waterbus, visit this website for more info - www.marinawaterbus.com
You can learn about Reef Check at www.reefcheck.org, and UCLA's marina weather station at marinaaquaticcenter.org
There is a shopping center on Admiralty and Mindanao with restaurants and grocery stores.
Burton Chace Park is a great place to sit and have a picnic and watch boats. You can find out about events in the park at the Visitors Center and at chacepark.com
Anytime during the day. Pack a picnic and hang out in Burton Chace Park.
You can find out the weather in the Marina from the website for UCLA's Marina Aquatic Center: www.marinaaquaticcenter.org
Large parts of this walk are in the sun. Be sure to wear sunscreen or a hat. Be aware of boats on trailers.