QB Issue Resolution:

The assumption is that these are expenses. If you are selling these things then they might be service items. Seems like an unlikely group of things to sell though.

Resolution for Issue 'Do airfare and restaurants tabs fall under “Service Items”? What about gym fees and pay-per-view? If not, what item category would these fall under?' available: Yes (Solved).
Source: Intuit Community forum.

Do airfare and restaurants tabs fall under “Service Items”? What about gym fees and pay-per-view? If not, what item category would these fall under?: this issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the issue yourself by looking for a resolution described below. If it is a complex issue or you are unable to solve the issue, you may contact us by clicking here or by using other support options.

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