Monterey Bay Aquarium is a shocking $49.95 per adult admission. At least you can earn 3,000 bonus points with IHG Rewards Club buying your tickets at no mark-up through the IHG Trip Extras link.
This offer has no term details, except to state 3,000 bonus points are earned with an activity purchase of $50 or more. Many of these activities are tours, yet other eligible activities are common tourist attractions like Monterey Bay Aquarium and San Francisco Bay harbor tours at their regular prices.
Check out the area around your home and places you are planning to visit to see if there is an activity you want to do and earn 3,000 bonus points making your activity purchase through IHG.