Many times, tripods and flash gear is welcome; if you're willing to carry it, you are welcome to bring it.
However, some indoor locations request we do not bring tripods (tripping hazard). And places with artifacts may ask us not to use flash. If there is any question, we will make that available in the "Last Minute Updates" email.
Unfortunately, sometimes that information may not be known until we arrive at the event. In those cases, that information will be provided at the "Opening Remarks (Roll Call)" portion once we group up. If tripods are not allowed, you can leave it in your car.
If the "tripod" question isn't answered in the Last Minute Updates email, consider tripods to be welcome.