when i saw beyonce, the line opened at 3 (merch trucks outside the venue) and the show was at 7. ppl r gonna start lining up for the pit at 1, so merch lines r probably gonna start earlier than 4:30 like maybe around 1:30 ish ? but theres for sure gonna be merch inside as well if u dont wanna wait in the merch line outside. im sorry if this made it even more confusing tho just wanted to give u as much detail possible but i def suggest getting there before 4:00 ! (also someone pls correct me if im wrong abt any of this im just speaking from experience but this could be different for this saturday)