Well, it's not really the "highest dose" there is. Just the highest recommended dose for treatment of transsexualism. The guideline documents for doctor I read said to start at 1/4 or 1/2 my dose, then "gradually" increase up to a maximum of my dose.
The endo told me: "If you want, you can go gradually, like, take 1/2 dose for a week, then add the second half after another week"... I found that a little fast/much, especially since it's generally better to stay at the lowest effective dose, but I trusted his experience and confidence. He even said that going gradually for a week wasn't really necessary. But now I'm sort of worried. It should be safe, especially since I'm relatively young, but I don't know about the end results.
By the way, I don't take spironolactone. They prescribe cyproterone here.
Oh, and I didn't understand the thing about the Holiday Inn.