Is there any reason to save every single 90 day check in receipt?
Or, is saving the most recent receipt, or the last four receipts enough?
TLDR : Answer Summary
Most respondents agree it's unnecessary to save every single 90-day check-in receipt. Keeping only the most recent receipt or the last one should suffice, as previous receipts are typically removed at immigration. Additionally, some commenters suggest that reporting is not critical, since it resets upon leaving the country and fines for non-compliance are relatively low.