Monetary gifts only —how to word the invites making sure guests bring gifts???

I’m having a smaller wedding of about 50 people. On the invites (Save the dates) I’ll be putting something along the lines of “Monetary gifts only, will be collected by the day of coordinator” —Is there a better way of wording this to make sure guests are not just there to take and will actually give?


My mother got married a few years back and specified monetary only and many guests gave her $30 and some family gave her NOTHING and only came to eat. I want the guests to make sure they know not to come empty handed because none of them are broke and are always vacationing.