My TMF single game ticket notification came in today. The only option available for me is GA/Lawn/SRO. The GA sections are 202 & 203. They are first come, first serve.

I do not want to sit on the grass. I really do not want standing room only. How early before the game would I have to get in line in order to be able to get a seat in sections 202 or 203?

Depends on the game.

Variables - time, day, opponent, weather...

Yeah, it depends on the game; you're gonna have to get there early. Especially weekend series, you gotta be there when the gates open. You can always get buddy-buddy with the Section 203 guys (best group of people I've ever met) because they save seats for each other

Worst case 90 minutes
Best case 45 minutes

I did this all last year and I only got there early enough about 1/2 the time. Having more than 2 people really makes it challenging.

Very

If you don't mind paying more I would just wait until closer to the game and buy seated tickets on the secondary market.

As others have said, it depends on the game.

For most games, being in line when gates open (90 minutes before first pitch) is good enough.

For Opening Day or the t.u. series, I would plan on 2-3 hours before first pitch.