This is a different page than Nova's guide to building a wedding website, that one is for couples planning their own wedding. This page is for the planner, the business booking couples and corporate clients based largely on what their past events looked like. A planner's site has to do real sales work, since most couples are comparing several planners' portfolios before ever getting on a call.
Describing your business to Nova, for example "a website for a wedding and event planning business specializing in outdoor ceremonies, with a portfolio of past events, our process, and a contact form for inquiries," produces a site structured around that, complete with a live preview you can look at before publishing to a free getnova.pro subdomain; nothing about trying this requires an account. Because the portfolio framing and process description come from your actual business rather than a generic "your dream day" template, the draft starts closer to something that reflects your actual style and the kinds of events you take on.
Worth being direct about scope: Nova builds the showcase and inquiry site itself, but it isn't a proposal tool, a contract or invoicing system, or a shared planning platform for coordinating with vendors and clients. Most planners already use a dedicated tool, something like Aisle Planner or HoneyBook, for those working pieces, and you'd link to your inquiry form or booking process from the Nova-built site the same way you would from any other page. Nova's job is the part that actually gets someone to reach out, the portfolio and the story of how you work, not the operational tools behind an active client relationship.
Yes, describe how you want your past work grouped, and Nova will structure the gallery around that instead of one undifferentiated list.
No, Nova builds the public-facing site; proposals, contracts, and invoicing stay with a dedicated planning or business tool that you'd use separately.
That depends on your business, some planners list starting investment ranges to set expectations early, others prefer a consultation first; Nova can structure either approach based on your description.
Describe your planning business to Nova and see a portfolio-driven site before deciding on anything else.