Shamefully, i've never taken my 'baby' soon to be 16

to SW, although he's a vet of the other parks & I haven't been to the park since late 70's
even though DS now thinks he's way too old for it, i know he'd appreciate the animals & the few rides, yet wondering whether it'd be better to:
* devote a whole day (weekend last week of June this year), maybe even do 1 day aquatica & then SW or the bounceback, next day deal (if still available then)

, bit worried about crowd factors then
or
* 1/2 day (probably arrive around 11 am) 1st Saturday on return trip in December; not sure how long the park stays open thou, know Universal tends to close early then
any thoughts?
I had priced out the Discovery Cove pkg last year & had sticker shock

, upon reflection & after factoring in prices i've seen charged for dolphin encounters on cruise excursions ($150 & up) & the different park admission options it's looking to be a better deal, albiet still pricey...guess i could skip a day or more @
WDW during June week...any strong recommendations/suggestions?