Honestly, we haven't sailed in a suite yet, but will be a week from today.
But we will be on an Oasis classic ship, which has different benefits. For what your benefits are, look here:
https://www.royalcaribbean.com/faq/questions/what-are-the-benefits-of-the-suites-program?country=USA
As for beverage packages, that depends on how much of a drinker you are, if not a heavy drinker, the soda or Refreshment package would likely be fine. We don't drink alcohol at all, so we get the Refreshment package which includes pretty much everything nonalcoholic except Starbucks and milkshakes fr the Promenade lounge. Milkshakes from Johnny Rockets are included.
The dining package can be good if you want to do. Lot of specialty restaurants, but main dining room is good too.
Personally, I find if you go in expecting to have a great time, that is what will happen and if you go in expecting to be miserable that is what will happen. Just know there will be good and bad, just don't let the bad outweigh the good.