Hotel
Only 2 miles from the wedding venue, just a quick jaunt down the 101 to get there. A chain hotel, so you know what you'll be getting, but not the most scenic location.
Hotel
We stayed here about a year ago on a weekend trip to Pismo and we enjoyed it. Quaint, on the coast, and a bit removed if you're staying for a few nights.
Hotel
If you want to stay in Pismo Beach proper, this is a fun little hotel that's near the pier and all of the other Pismo attractions.
Flight
Probably the most "convenient" airport option if you are intending to fly. Beware that it's still a 3 hour drive (minimum) from LA, but LAX will likely have the most variety and the best prices for flights.
Flight
About the same drive time from Fresno as LA, but it may be less hectic than the hustle and bustle of LA. Neither of us have ever used this airport though, so we're speculating.
Flight
SLO County Airport is by far the closest airport (about 20 minutes from the venue), but the airport is quite small so flights will be more limited and prices will certainly be higher.
Travel Note
San Luis Obispo is about 15-20 minutes up the 101 from the venue. While we do not have any specific recommendations for hotels in the area, we do really like the vibe that SLO has to offer if you would rather be in more of a "city" than a beach town like Pismo/Arroyo Grande.