Ceremony area and music

My FH and I are getting married at a park with a pavilion with picnic tables under nearby. If the weather stays nice we plan to do it outside of the pavilion in-front of the wood-line with our archway. My concern is where does the party come out of including myself like do we get out of the cars and just walk right down the aisle or should we put up a tent to walk thru to like “ make an entrance” and also our ceremony is standing because we literally are doing like 10 mins of officiating. Also music to walk down the aisle to? Do I hire a single person to play from a guitar or violin or get a small speaker and play a song from my phone? I need ideas?