I was one of the parishioners who acted as Guardians, just to keep an eye on things and provide a permanent presence in the room while literally hundreds of people came through.
Of course that meant I couldn't wander among the relics as long as I wanted, but after my watch was up I was able to visit and read and take photographs and pray.
It was almost overwhelming to be in the room with the relics of so many saints. Particularly noteworthy were St. Anthony of Padua (to whom I have a special devotion), St. Thomas More, St. Gertrude the Great, St. Therese, St. John Vianney and his favorite saint St. Philomena, St. Dominic, and St. Luke. There was also a very well-attributed fragment of the Cross.
I would say that it is well worth a visit if it comes to your area. They allow cameras and are perfectly amenable to your touching your rosary or holy cards to the reliquaries!
st Jude the apostle was there and st augustines mother and etc etc. Two thousand years worth of dozens Of relics.
St Catherine of Siena church in Kennesaw.