Do the zinnias need a lot of water,
No more than most flowers. I think it depends on the kind of soil, how much mulch on top and how high the daytime temperature. They love sunshine. I have some zinna that have full sun and some that have late afternoon shade. There is a visible difference in the size of plants and flowers. More sun = bigger flower blooms.
I water once or twice a week. The plants have several inches of mulch which keeps the soil moist.
I keep looking at my phone. It hasn't rung a single time today. I have only received one test message. For fun & giggles I checked how many phone calls I got on average last week ...14 calls a day was the average. Our front door has only been used a couple times today. No activity in the driveway. It is eerily quiet and calm. I might be having withdrawals from constant teen activity.
DD13 has been on the phone with a friend most of the afternoon. I enjoy listening to the background noise of their chatter. Otherwise, she has been quietly going through her daily activities. Painting, making jewelry, writing stories, playing games, etc.
Stay curious. Challenge assumptions. Success loves persistence.
When life gets difficult, learn to sing & dance in the rain.