1) The spacing between sentences is inconsistent (some are double-spaced and some are single-spaced)
2) Typo:
The real value of miles is when you need a last-minute ticket, a one-way ticket, a ticket with a stopover, or a ticket in business or in first class.
3) Inconsistent notation of registered marks (though this may be because of affiliate rules that I'm not aware of), plus an extra space before the comma after the EveryDay Credit Card from American Express.
The Amex EveryDay Credit Card from American Express, The Amex EveryDay Preferred Credit Card from American Express, the American Express® Premier Rewards Gold Card and The Platinum Card® from American Express.
4) More commas with extra space
Chase Ultimate Rewards points are earned from cards like Sapphire Preferred, Freedom Visa, Ink Bold, Ink Plus, or Ink Cash.
5) Doubled letter.
Otherwise a month in advance is a typical sweet spot.
Nitpicky editing is the best editing.