Out more than 250 days per year, not that often in the winter though, snow and ice and most problematic: Dark after work so mostly weekends possible.
Number of sessions?
Depends on how you define sessions on a given day - Each spot you drive to and ride?
Each time you get into/out of your suit/shorts?
Each time you take another type say waveboard/wavekite or wingfoil or kitefoil or TT etc?
Or each time you take another board and rig another kite or wing size?
If the latter, I am around 400 sessions per year, quite often riding waveboard and wingfoil and kitefoil same day same spot, and sometimes out at several spots the same day.
1. A few minutes walk or drive from home, max 25 minutes in all 360 degrees of wind directions locally, but often drive 45 minutes for good wave conditions or better spots. 1½ max 2 hour drive to really big waves sometimes. But we got almost hundred spots quite close max 45 minutes drive
2. 20 minutes to 8 hours, as if wind dies or it gets dark, or you want to do something else, 20 minutes is better than nothing. 7-8 hours if a really good summerday. Most days a couple of hours average I think.
3. Yes, often sore in a good way, but not tired - feels good, afterwards, and can be slightly sore a couple of days after, if really hard sessions, but usually out the next day or the day after again.
#3 has been like that since I was 16 and started surfing, dont exercise much now (did earlier years ago when wave windsurf was only a few times a month) with so many surf options every day, as you get all the exercise needed when you surf a lot
Only when you can not go out for a shile, like here in icy winter some days, I might exercise yes, but surf so much that it is better to take a break and charge the batteries again