One of the ways we reverence God is by properly celebrating holidays.
When we reverence someone or something the most fundamental thing we do is pause and acknowledge. If we are before a revered object and continue checking our phone, we are unconsciously stating the object before us is not that significant. We fill ourselves with what we think is necessary, and we continue on the path—more a rut—of self-absorption.
Romano Guardini writes of reverence that man refrains from doing what he usually likes to do, which is to take possession of and use something for his own purposes. Instead he steps back and keeps his distance. This creates a spiritual space in which that which deserves reverence can stand erect, detached, and free, in all its splendor.
The virtue of reverence is for our own good. The 'spiritual space' that is created by our religious action recreates and restores us. God fills our soul and we appropriate an exterior beauty and goodness that truly satisfies. We have to break from our work, however, for this indwelling to occur. This is why, on holidays and even birthdays when reverence is fundamentally at hand as we acknowledge something good, we cease from labor.
Well, the greatest "holiday" of all is when Jesus rose from the dead. Unlike other holidays, Easter is not celebrated once a year, but every Sunday. When we go to Mass, we pause before God and are filled by him. If one holiday a week is not enough for you, then you could go to Mass every day and even pray before the Blessed Sacrament.
The Mass being the best act of recreation, then in addition to barbecues and bags, perhaps we may consider receiving the Eucharist to most reverence Labor Day.