First of all, your English is better than many of The Americans on this site! Now to answer your questions:
1. you may have as many horses as you want. You may order an entree as an appetizer or double an appetizer as an entree, you can have the soup and the salad and two desserts if you like! Generally speaking, an appetizer, soup or salad, entree and dessert has proven to be more than enough, but if several favorites are on the menu at one time we will splurge.
2. it is my understanding that all of the cabins will be refurbished, and go to the more neutral palette that currently exists on the Edge.
3. we always fly into Fort Lauderdale because it's so much more affordable, and then we head over to Miami and stay at a hotel there. Uber generally runs us between 30 and $40. We made the mistake of taking a cab one time recently instead, and it was over $100. our experiences with Uber in the Fort Lauderdale Miami area have been that they are prompt and polite, but many have limited English. Having said that, they know where are your destination is it will get you there safely.
Enjoy your cruise!