Thank you! And Happy early anniversary also!
Just found this info in the CHOC Walk Website, which may also impact your decision:
CHOC Walk registration does not include admission to the parks. However valid only on 08/27/2017: Present your CHOC Walk In the Park wristband to any Disneyland® Resort ticket booth to purchase a Disneyland® Resort 1-Day Park Hopper® ticket for $86.00 or a 1-Day, 1-Park ticket valid at either Disneyland® Park or Disney California Adventure® Park for $57.00 for use on 8/27/17 or your next trip to the Disneyland® Resort! An additional Disneyland® Resort ticket booth will be located in the CHOC Walk Festival Area in the Downtown Disney® District on 8/27/17. Limit: one time purchase of up to 5 tickets per wristband. Tickets must be used by expiration date of 9/23/17. Block out dates apply: 9/1/17 – 9/4/17, 9/15/17, 9/20/17-9/22/17. Terms and conditions on the tickets shall apply. Any damaged, lost or stolen tickets will not be replaced. An inability to use any tickets will result in forfeiture of such tickets. Subject to change without notice.
This may impact crowds on 8/27 also