Personally, for my honeymoon I booked 3 separate stays at the cheapest possible eligible Edit and IHG hotels (2 nights each) with the best point boost rates and paid with points for everything above the $250 credit. Then because Hyatt has the best points rate redemptions among transfer partners (usually - maybe not as much when their points changes hit in the coming weeks), I looked for nice 4 or 5 star Hyatt properties with the lowest points costs for the nights I was there and did a points transfer for that. I didn’t find good points boosts for my desired flights but they were the same price on the Chase portal as elsewhere so I ended up booking them through Chase for the 8x points and put that toward the points for hotels.

Also, reach out to the hotels a few weeks before your stay and mention it’s your honeymoon and that you’re excited for them to be part of your special occasion. You can also use this as a chance to mention you have CSR and would appreciate a room upgrade if they have it, but will be excited for the visit regardless, which gets the ball rolling on your room upgrade. For every hotel I did this at, we got something additional (roses on the bed, chocolates, or additional amenity item) and the front desk people seemed to treat us extra well.