I think I messed up, Im in the autumn season and I got a few scenarios that require going to the beach. Is my play through screwed or can I change some stuff in the files/console to roll it back or forward? Is there anything to look forward to for the rest of autumn, winter or spring?
One thing to bear in mind is that there is no end to the game by virtue of hitting a particular date.
Depending on your choices at startup, this is almost entirely inevitable (for example getting a car will take some time without cheats). Just focus on the characters you can make progress with, make some money, learn skills (there are a few events related to skills, most obviously the guitar skill if you have not picked that), and improve your stats. Then in the second year of your playthrough you should be able to do all the summer events then.
Depending on how far you progressed with Kleio and Morgan, that can be a bit bothersome though.
Thus tread carefully with those two.