Rosie,
Much of Blondie58's recommendations apply only to pre-Covid conditions. While we can hope for a return to "normal" by May, I don't expect it. Perhaps we'll get to somewhere between current conditions and normal, but I doubt we'll be all the way back to normal.
Currently, annual passes are not for sale and there are no fastpasses. Dining reservations are available at 60 days, not 180, and that isn't expected to change. Disney has pretty much said they're not going back to 180 days for dining reservations.
Disney has said they'll open one of their water parks in March. They haven't announced which one yet.
Have you bought tickets yet? If so, how many days? I have heard Europeans can buy 14-day tickets. Americans are limited to 10 days (although there were annual passes available until the Covid shutdown). Once you have purchased your tickets, link them to your My Disney Experience account, if that wasn't done by Disney when you bought them, and make park reservations for the number of days on your tickets. Much of the pre-Covid advice as to what days of the week to go to which park is outdated under current conditions, although you can consider it in hopes we'll be more normal by May. It seems that lately the weekends are busiest at all parks. HS is the busiest park, as measured by wait times, on all days but has less of a time difference between midweek and the weekend. Here's a link to a recent article that has tables listing daily wait times at MK, HS and AK since reopening:
https://www.easywdw.com/easy/blog/walt-disney-world-wait-times-and-news-for-9-26-20/
The Hilton Bonnet Creek does not have use of Disney transportation to get to the theme parks. I don't know if the Hilton has buses to the Disney theme and water parks or not. Even if they do, they probably don't run as often as the Disney buses run to the Disney resorts. If you have to instead taxi/Uber/Lyft to the parks, consider the cost of that as part of your hotel cost. Of course, I've seen lots of posts by people staying at Disney resorts who took Uber to the parks in the mornings to avoid the wait for Disney transportation, so I can't say staying at a Disney resort always avoids this cost.
If you had a rental car and the time, I'd suggest considering out-of-town attractions like Busch Gardens Tampa and the Kennedy Space Center, but getting to either by taxi would be very expensive. Perhaps there's a cheaper way to get to them. The concierge desk at your hotel could help, but I doubt that service is available to you while planning months ahead. Seaworld is nearby (closer than Universal) and is worth a day. I think Universal needs at least two days.
As DanaLTK suggested, ask specific questions when you think of them.