Just presenting the alternative--hope you don't mind. Of course, it's all up to you and your honey.
Do you really want an "ambitious" honeymoon? I mean--a tour of Vatican City?! I would have a difficult time focusing on my new spouse while I was touring and oohing and ahhing over this marvelous city.
My husband and I went to a State Park and stayed in a cabin for three days. Then we came back to our home city and stayed in the fanciest hotel in our city for another 2 days. (No one knew where we were except the Best Man in case of an emergency. They all thought we were far, far away!)
We focused on each other, not touring. Our agenda in both places was "make love, talk, relax, repeat."
For many couples, the wedding is absolutely exhausting. For months, you have lived with the constant grind of planning and carrying out a wedding. It's fun, but it's also nerve-wracking, and of course, no matter how carefully you plan, something will go wrong and mess up the "perfect" day. Hopefully you will take it in stride and consider it a foreshadowing of a real marriage, where things do go wrong quite often, and couples have to figure out ways to make the best of it, stay in love, and keep hanging onto each other.
To head straight from a wedding to an activity-filled honeymoon with an "itinerary" is rather daring, if you ask me. Already, you're stressed about it.
Why not just plan something simple and cheap, and save the grand trip for the One Year Anniversary?
The tropical get-away sounds OK, though. Turn it all over to a travel agent. Give him/her your budget and tell him/her to plan it down to the last detail. You don't need this additional stress.
BTW, this has nothing to do with the topic, but it's an example of what can go wrong on the wedding day. My son-in-law's cousin was married a few weeks ago. The day before their wedding, the men went to pick up the tuxes. Instead of the elegant black that they THOUGHT they had ordered, someone at the tux store had put in an order for ghastly gray pin-striped tuxes that looked, literally, like something out of a 1920s James Cagney mobster movie! The men kept joking that they should all carry guns down the aisle! There was nothing they could do about it at that point. The bride especially was devastated--she was kind of a Bridezilla anyway, and this was definitely not what she planned! Oh, well. The wedding happened anyway, and hopefully, she and her new husband will joke about the "Mobster tuxes" on their 50th Wedding Anniversary.