Gifting Stars to the same person again, whether monthly support for a creator or just another one-off, uses the same USDT checkout flow each time — nothing changes after the first gift.
Gifting Stars with a card usually means the payer's own billing details go through the checkout too; USDT sidesteps that — only the recipient's username and the payer's USDT wallet are involved.
USDT can be sent at any hour, on any date — there's no cutoff time to hit for a gift to land on the day it's meant for.
The recipient's — Stars are delivered to whichever username is entered at checkout, not the payer's account.
No, nothing on their end is required — the Stars are credited automatically once the USDT payment confirms.