Looking for tips on organizing a backyard party

I’m planning a small backyard gathering for friends and family and wanted to hear how others usually organize these types of events. I’m mainly trying to figure out what items are worth renting instead of buying, especially things like seating, tables, lighting, or decorations. A friend suggested checking out options for party rental los angeles, but I’d like to know what experiences others have had with event rentals and what things I should consider before booking anything.