Just booked a trip to Myrtle beach! First vacation as an adult. Any recs?

Hi guys! I just booked a condo for Myrtle Beach this July. I’m going with my mom, stepdad and best friend. I’ve never really have ever taken an actual vacation so I need the next planning tips and things to do!

I’m trying to stay at a budget so any fun things to do cheap and good food places let me know!