Add tip for Iceberg object_storage integration with BigQuery (#1494)

Author: kbatuigas

modules/manage/pages/iceberg/iceberg-topics-gcp-biglake.adoc

@@ -13,6 +13,13 @@ ifndef::env-cloud[]
 :rpk_install_doc: get-started:rpk-install.adoc
 endif::[]
 
+[TIP]
+====
+This guide is for integrating Iceberg topics with a managed REST catalog. Integrating with a REST catalog is recommended for production deployments. If it is not possible to use a REST catalog, you can use the xref:manage:iceberg/use-iceberg-catalogs.adoc#object-storage[filesystem-based catalog]. For an example of using the filesystem-based catalog to access Iceberg topics, see the https://www.redpanda.com/blog/iceberg-topics-redpanda-cloud-byoc-setup[Getting Started with Iceberg Topics on Redpanda BYOC^] blog post.
+
+ifndef::env-cloud[The blog post uses a Redpanda Cloud cluster, but you follow the same steps for a Self-Managed cluster.]
+====
+
 This guide walks you through querying Redpanda topics as Iceberg tables stored in Google Cloud Storage, using a REST catalog integration with https://cloud.google.com/biglake/docs/introduction[Google BigLake^]. In this guide, you do the following:
 
 - Create Google Cloud resources such as a storage bucket and service account

modules/manage/pages/iceberg/rest-catalog/index.adoc

@@ -1,3 +1,5 @@
 = Integrate with REST Catalogs
 :description: Integrate Redpanda topics with managed Iceberg REST Catalogs.
-:page-layout: index
+:page-layout: index
+
+TIP: These guides are for integrating Iceberg topics with managed REST catalogs. Integrating with a REST catalog is recommended for production deployments. If it is not possible to use a REST catalog, you can use the xref:manage:iceberg/use-iceberg-catalogs.adoc#object-storage[filesystem-based catalog]. For an example of using the filesystem-based catalog to access Iceberg topics, see the https://www.redpanda.com/blog/iceberg-topics-redpanda-cloud-byoc-setup[Getting Started with Iceberg Topics on Redpanda BYOC^] blog post. The blog post uses a Redpanda Cloud cluster, but you follow the same steps for a Self-Managed cluster.

modules/manage/pages/iceberg/use-iceberg-catalogs.adoc

@@ -319,6 +319,13 @@ ifdef::env-cloud[]
 The base path for the filesystem-based catalog if using the `object_storage` catalog type is `redpanda-iceberg-catalog`. 
 endif::[]
 
+[TIP]
+====
+For an end-to-end example of using the filesystem-based catalog to access Iceberg topics, see the https://www.redpanda.com/blog/iceberg-topics-redpanda-cloud-byoc-setup[Getting Started with Iceberg Topics on Redpanda BYOC^] blog post.
+
+ifndef::env-cloud[The blog post uses a Redpanda Cloud cluster, but you follow the same steps for a Self-Managed cluster.]
+====
+
 == Next steps
 
 * xref:manage:iceberg/query-iceberg-topics.adoc[]