Accepting BTC as Payment for In-Person Sales

I run a booth at the farmers market. If I want to accept BTC as payment, do I need a LN node to speed up tx times and reduce fees? I would like the tx's to be nearly instant, under ten seconds, but with minimal technical knowledge required for the sender. Any tips appreciated. The stuff I sell is also as low as $4, so reducing tx fees as much as possible is huge.

Is there anything like 0-confs still?

submitted by /u/AphexPin
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