FH & I are attending an engagement party for two of our very sweet friends. The invitation asks for a donation to XYZ Charity in place of any gifts and that the details will be available at the party. We plan to donate since this is what the couple has requested. My question is, do we still bring a card? Is this a case where you show up empty handed because you will be donating at the party? Or do we still bring a card expressing our congratulations and well wishes? I doubt they will be offended either way but I’d like some opinions