diff --git a/roles/sugarizer/tasks/main.yml b/roles/sugarizer/tasks/main.yml
index 8eb963551..dd52a33bc 100644
--- a/roles/sugarizer/tasks/main.yml
+++ b/roles/sugarizer/tasks/main.yml
@@ -1,7 +1,74 @@
-- name: Install 'sugarizer' if sugarizer_install and not Debian 10+
-  include_tasks: install.yml
-  when: not sugarizer_installed is defined and sugarizer_install and not ((is_debian and not is_raspbian) and (not is_debian_8) and (not is_debian_9))
+# "How do i fail a task in Ansible if the variable contains a boolean value?
+# I want to perform input validation for Ansible playbooks"
+# https://stackoverflow.com/questions/46664127/how-do-i-fail-a-task-in-ansible-if-the-variable-contains-a-boolean-value-i-want/46667499#46667499
 
-- name: Enable 'sugarizer' if sugarizer_enabled
-  include_tasks: enable.yml
-  when: (sugarizer_install or sugarizer_installed is defined) and not ((is_debian and not is_raspbian) and (not is_debian_8) and (not is_debian_9))
+# We assume 0-init/tasks/validate_vars.yml has DEFINITELY been run, so no need
+# to re-check whether vars are defined here.  As Ansible vars cannot be unset:
+# https://serverfault.com/questions/856729/how-to-destroy-delete-unset-a-variable-value-in-ansible
+
+- name: Assert that "sugarizer_install is sameas true" (boolean not string etc)
+  assert:
+    that: sugarizer_install is sameas true
+    fail_msg: "PLEASE SET 'sugarizer_install: True' e.g. IN: /etc/iiab/local_vars.yml"
+    quiet: yes
+
+- name: Assert that "sugarizer_enabled | type_debug == 'bool'" (boolean not string etc)
+  assert:
+    that: sugarizer_enabled | type_debug == 'bool'
+    fail_msg: "PLEASE GIVE VARIABLE 'sugarizer_enabled' A PROPER (UNQUOTED) ANSIBLE BOOLEAN VALUE e.g. IN: /etc/iiab/local_vars.yml"
+    quiet: yes
+
+- name: EXIT SUGARIZER PLAYBOOK, IF DEBIAN 10+ (where MongoDB doesn't exist)
+  meta: end_play
+  when: (is_debian and not is_raspbian) and (not is_debian_8) and (not is_debian_9)
+
+
+- name: Install Sugarizer if 'sugarizer_installed' is not defined in {{ iiab_state_file }}    # /etc/iiab/iiab_state.yml
+  include_tasks: install.yml
+  when: sugarizer_installed is undefined
+
+
+# Auto-starts mongodb via the requires= line in unit file
+- name: Enable & Restart 'sugarizer' systemd service, if sugarizer_enabled
+  systemd:
+    name: sugarizer
+    daemon_reload: yes    # in case mongodb.service changed, etc
+    enabled: yes
+    state: restarted
+  when: sugarizer_enabled | bool
+
+# Stops sugarizer but not mongodb
+- name: Disable & Stop 'sugarizer' systemd service, if not sugarizer_enabled
+  systemd:
+    name: sugarizer
+    enabled: no
+    state: stopped
+  when: not sugarizer_enabled
+
+# Stops mongodb (in the past this would've been called via meta/main.yml)
+- name: Run mongodb/tasks/enable.yml to stop MongoDB, if not sugarizer_enabled
+  include_tasks: roles/mongodb/tasks/enable.yml
+  when: not sugarizer_enabled
+
+- name: Enable/Disable/Restart Apache if primary
+  include_tasks: apache.yml
+  when: not nginx_enabled
+
+- name: Enable/Disable/Restart NGINX if primary
+  include_tasks: nginx.yml
+  when: nginx_enabled | bool
+
+
+- name: Add 'sugarizer' variable values to {{ iiab_ini_file }}
+  ini_file:
+    path: "{{ iiab_ini_file }}"
+    section: sugarizer
+    option: "{{ item.option }}"
+    value: "{{ item.value | string }}"
+  with_items:
+    - option: name
+      value: Sugarizer
+    - option: description
+      value: '"The Sugar Learning Platform began with the famous One Laptop Per Child project, written in Python.  Sugarizer is the new HTML/JavaScript implementation of Sugar, usable in most all browsers."'
+    - option: sugarizer_enabled
+      value: "{{ sugarizer_enabled }}"