I circled back because I kept thinking about your question, and my short answer would probably have sounded too dismissive.
I do think the smaller plan is better for now, mostly because it leaves more room to adapt later if the weekend turns busier than expected.
I tried a packed schedule once and spent most of the time watching the clock, which kind of defeated the point.
It usually works better for me when I keep one anchor activity, one backup, and the rest loose enough that changing direction does not feel annoying.
If the weather shifts, or somebody is running late, the whole thing still feels easy instead of frustrating.
I would start simple, keep snacks nearby, and leave space for a walk or a long chat if the mood is right.
That way the day can become memorable without needing to be overly organized in advance.

I finally had a minute to answer properly, and I think the simplest approach is still the best one.
When I overcomplicate things, I usually spend more energy fixing tiny problems than enjoying whatever I planned in the first place.
If you already have a rough idea, I would trust that and just make a few gentle adjustments around timing.
I like leaving a little free space between things because it makes the whole day feel calmer and less rushed.
Also, people are usually more comfortable when there is no pressure to stick exactly to a checklist.
I would rather finish one thing feeling relaxed than squeeze in five things and feel scrambled after.
If you want, send me the outline you have now and I can help trim it down without losing the parts that feel important.
I am happy to look it over later tonight when things quiet down.