Seriously, though, every thing that happens in the bar in Raiders happens for a reason and has a consequence, either a few minutes later or a few scenes later.
Contrast that with runaway mine car in Temple of Doom, a pointless sequence with no thrills that went on for two long (were they planning a rollercoaster based on it while they were still making the movie) or the death trap that could be escaped by pulling a lever but it was too icky to stick her hand in. (Which brings us back to Marion. She wouldn't have been skeeved by some icky bugs.)
I suppose I could have suspended disbelief if they just hadn't had bugs for dinner. Got up. Walked out. Saw the end on DVD.
Were they planning a roller coaster ride while they were making the movie...
I’d say almost certainly so.