My mom is retiring, yay!

My dad is throwing her a party at a local pizza place and I'm thinking of doing decorations and favors. Ive never been to a retirement party so I don't have many ideas though.... so far I'm thinking beach theme because we live on the beach so I know my mom wants to spend lots of time relaxing there, or something like "life is sweet " because she loves chocolate. Plus she loves to read so I could do a book theme.

As for a gift ... maybe a beach themed gift basket with a new swim suit, sun hat, cover up, book, towel, etc.

Any other ideas? I feel like normally I'm good with parties, but I'm kind of lost with this one.