One of the easiest Accelerate offers I've had, considering what I need to do over the three months anyway:
Stay once - 2,000 (Happy Anniversary)
5 nights - 10,000
2 Holiday Inn Express hotels - 8,400
3 stays with App - 9,600
3 stays with Corporate Account - 2,500
Redeem something - 1,000
Achievement bonus (6 out of 7) - 12,500
Stay once in May bonus - 2,000