The popular card grading companies regularly attend card shows and host up drop-off events, for collectors that want to drop off (and optionally grade) their sports card submissions in person.
The benefits of dropping your cards off in person include:
In-person guidance and assistance
Possibly quicker turnaround time
Direct feedback
Saving on shipping
Less risk of your package getting “lost” in the mail
Upcoming card shows and grading card company events
Most of the grading card companies publish a calendar of card shows they’re planning to attend plus card drop-off events. See the links below to check where your favorite grading card company will be.
PSA Upcoming card shows and drop-off events
SGC No specific list of events, but check out their Instagram for event posts