Nicynot I feel your pain. I was planning on getting 4 of those 3-park 3-days park-to-park tickets and upgrading them to 3-park Season Passes when we arrived. Unfortunately we're not close enough to our trip dates to order them since Universal decided to add a 9 month expiration date on them.
Air Miles did this last year as well. As soon as Universal offered the get 2 days free, Air Miles immediately upped the redemption miles. Unfortunately, last year when the Universal 2 days free offer ended on November 30th (with the tickets expiring in May 2018), Air Miles took the Universal tickets off their website. When they brought them back, the redemption went up. So... I would count on the Universal 3-day 3-park-to-park ticket being more.
In fact, I just checked out the redemption site... Be aware these tickets expire 9 months after purchase. Air Miles is now offering:
3-park 3-days park-to-park tickets for 4,050 miles (used to be 3,600).
* this costs $339.99 online at Universal
2-park 2-days park-to-park tickets for 3,200 miles
2-park 1-day park-to-park tickets for 2,350 miles
As well as the Universal Studios free days promo of:
2-park 3-days (PLUS 2 free days) park-to-park tickets for 3,375 miles
3-park 3-days (PLUS 2 free days) park-to-park tickets for 4,050 miles * this costs $279.99
Don't you LOVE how Air Miles not only increased the amount of miles on the 3-park 3-days park-to-park ticket (with no extra days)
AND left the same redemption for the ticket with the 2 free days, even though Universal is charging $60 less for the 5 day promo? (buy 3 get 2 days free)