Charging something on your Hilton Amex would be easiest:
How long will Bonus Points count towards Elite tier qualification?
Bonus Points earned through eligible purchases on your Hilton Honors American Express card that post to your Hilton Honors account between now and December 31, 2023 will be considered Base Points that count toward Elite tier qualification and Lifetime Diamond Status.
https://www.hilton.com/en/hilton-hon...estone-bonuses
But as noted by TBS if you don't have the cc then a stay it will probably have to be.
Restaurant only visits to a hotel work for Hyatt but not for Hilton.