Can't add content Hotel Type -

I get errors creating a Hotel Type with alpha1 and dev. The node gets created but fields don't get saved and viewing it throws a very long list of undefined errors. I've re-installed several times and downgraded my Date to Date 1.x (apparently in 2.x there's been some 'field-handling' changes). The tables mentioned in dev errors exist but are empty. Is there anything else to check in my database?

Steps to reproduce errors:
1) Completely uninstall Rules, Hotel Booking, and Date.
2) Flush cache twice from Performance page
3) Fresh upload and enabling, one at a time, UC beta2, Rules 2.x dev, Date 1.x, Hotel Booking alpha1
Upon enabling Hotel Booking, I get the error:

Notice: Undefined index: full in field_info_max_weight() (line 797 of /hanlovelights/modules/field/field.info.inc).

4) Disable and re-enable the module, and the error does not return.
5) Go to admin/store/hotel_booking from browser bar (my Ubercart menu items disappeared a while ago and have not come back)
6) Add base rate, and fill in values for all days
7) Create node on node/add/hotel-room-type

Trying to add content in HB dev returns these errors:

Notice: Trying to get property of non-object in hotel_booking_auto_availability() (line 594 of /hanlovelights/sites/all/modules/uc_hotel/hotel_booking/hotel_booking.util.inc).
Notice: Trying to get property of non-object in hotel_booking_auto_availability() (line 595 of /hanlovelights/sites/all/modules/uc_hotel/hotel_booking/hotel_booking.util.inc).
Notice: Trying to get property of non-object in hotel_booking_auto_availability() (line 605 of /hanlovelights/sites/all/modules/uc_hotel/hotel_booking/hotel_booking.util.inc).
Notice: Trying to get property of non-object in hotel_booking_auto_availability() (line 607 of /hanlovelights/sites/all/modules/uc_hotel/hotel_booking/hotel_booking.util.inc).
PDOException: SQLSTATE[22007]: Invalid datetime format: 1292 Incorrect datetime value: '' for column 'calendar_dt' at row 1: INSERT INTO {hotel_booking_availability_calendars} (nid, calendar_dt, available) VALUES (:db_insert_placeholder_0, :db_insert_placeholder_1, :db_insert_placeholder_2); Array ( [:db_insert_placeholder_0] => 0 [:db_insert_placeholder_1] => [:db_insert_placeholder_2] => 0 ) in drupal_write_record() (line 6776 of /hanlovelights/includes/common.inc).

Trying to add content in alpha1 errors:

Warning: preg_match() expects parameter 2 to be string, object given in DateObject->parse() (line 368 of /hanlovelights/sites/all/modules/date/date_api/date_api.module).
Warning: array_shift() [function.array-shift]: The argument should be an array in DateObject->parse() (line 369 of /hanlovelights/sites/all/modules/date/date_api/date_api.module).
Warning: preg_match() expects parameter 2 to be string, object given in DateObject->parse() (line 368 of /hanlovelights/sites/all/modules/date/date_api/date_api.module).
Warning: array_shift() [function.array-shift]: The argument should be an array in DateObject->parse() (line 369 of /hanlovelights/sites/all/modules/date/date_api/date_api.module).
Warning: preg_match() expects parameter 2 to be string, object given in DateObject->parse() (line 368 of /hanlovelights/sites/all/modules/date/date_api/date_api.module).
Warning: array_shift() [function.array-shift]: The argument should be an array in DateObject->parse() (line 369 of /hanlovelights/sites/all/modules/date/date_api/date_api.module).
Warning: preg_match() expects parameter 2 to be string, object given in DateObject->parse() (line 368 of /hanlovelights/sites/all/modules/date/date_api/date_api.module).
Warning: array_shift() [function.array-shift]: The argument should be an array in DateObject->parse() (line 369 of /hanlovelights/sites/all/modules/date/date_api/date_api.module).
Warning: preg_match() expects parameter 2 to be string, object given in DateObject->parse() (line 368 of /hanlovelights/sites/all/modules/date/date_api/date_api.module).
Warning: array_shift() [function.array-shift]: The argument should be an array in DateObject->parse() (line 369 of /hanlovelights/sites/all/modules/date/date_api/date_api.module).
Warning: preg_match() expects parameter 2 to be string, object given in DateObject->parse() (line 368 of /hanlovelights/sites/all/modules/date/date_api/date_api.module).
Warning: array_shift() [function.array-shift]: The argument should be an array in DateObject->parse() (line 369 of /hanlovelights/sites/all/modules/date/date_api/date_api.module).
Warning: preg_match() expects parameter 2 to be string, object given in DateObject->parse() (line 368 of /hanlovelights/sites/all/modules/date/date_api/date_api.module).
Warning: array_shift() [function.array-shift]: The argument should be an array in DateObject->parse() (line 369 of /hanlovelights/sites/all/modules/date/date_api/date_api.module).
Notice: Object of class stdClass could not be converted to int in drupal_write_record() (line 6733 of /hanlovelights/includes/common.inc).
PDOException: SQLSTATE[22007]: Invalid datetime format: 1292 Incorrect datetime value: '' for column 'calendar_dt' at row 1: INSERT INTO {hotel_booking_availability_calendars} (nid, calendar_dt, available) VALUES (:db_insert_placeholder_0, :db_insert_placeholder_1, :db_insert_placeholder_2); Array ( [:db_insert_placeholder_0] => 143 [:db_insert_placeholder_1] => [:db_insert_placeholder_2] => 1 ) in drupal_write_record() (line 6776 of /hanlovelights/includes/common.inc).