Rotomolded coolers vs mid-range coolers: Mid-range with 2-inch insulation wins for a single beach day

Rotomolded coolers (Yeti, RTIC, Pelican) have 2-3 inches of foam and keep ice for 24+ hours, but cost $300+. A Coleman Xtreme with 2-inch walls gets 10-12 hours for much less — enough for a beach day. Pre-chill the cooler, use a 2:1 ice-to-contents ratio, keep it shaded, and drain water sparingly. A towel on top adds an hour or two.