Start with the capture date
The acquisition date tells you when the satellite observed the location. A file downloaded today may contain an observation captured much earlier. Check the metadata rather than assuming the download date is the observation date.
Revisit is not continuous viewing
Many Earth observation satellites pass over a location periodically. Their ability to obtain a usable observation depends on orbit, sensor, acquisition planning and conditions. For optical imagery, cloud can obscure the area even when a satellite passes over it.
Latency describes the wait after capture
After acquisition, data can require downlink, processing, quality checks and distribution. Fast access after capture does not mean a satellite can continuously observe your requested location. Near-real-time products should state the relevant latency and source conditions.
Ask a precise question
Instead of asking only for real-time imagery, specify the area, latest acceptable acquisition date, acceptable cloud coverage and required delivery time. Ask the supplier to confirm all four before you purchase.
Further reading: Copernicus Sentinel-2 mission documentation ↗